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Cobalt Red Helix Drill Bit Set for Drill Drivers (29-Piece)

$12900
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  • QUADEDGE TIP decrease heat build up for faster drilling
  • RED HELIX for rapid material extraction
  • ENHANCED TAPERED WEB increases flute durability & core strength
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Product Overview

The MILWAUKEE RED HELIX Cobalt 23 Piece Drill Bit Set is engineered for extreme durability and longer life in hard metal applications. The Milwaukee Cobalt drill bits are designed with a VARIABLE HELIX that includes an aggressive 35° Helix Angle which ends at 15°. The drill bits have QUADEDGE TIP to decrease heat buildup and drill faster. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes in Hard Metal, PVC and wood.The tapered drill bits feature a new ENHANCED TAPERED WEB that strengthens the bit's core to increase flute durability. The cobalt twist drill bits are ideal for tough applications, providing up to 15X life vs. Black Oxide Drill Bits. This set includes 23 bits from 1/16 in. to 1/2 in..
  • Cobalt alloy for up to 15x life vs. black oxide drill bits
  • QUADEDGE TIP designed to decrease heat build up and drill faster
  • ENHANCED TAPERED WEB strengthens the bits core
  • VARIABLE HELIX Design for rapid material extraction
  • 135° split point for precision start no walking
  • 3-Flat Secure-Grip helps keep the bit fixed within the the chuck
  • Designed for hard metals, PVC and wood
  • Includes: (2) 1/16 in. Cobalt Drill Bit, (2) 5/64 in. Cobalt Drill Bit, (1) 3/32 in. Cobalt Drill Bit, (2) 7/64 in. Cobalt Drill Bit, (2) 1/8 in. Cobalt Drill Bit, (2) 9/64 in. Cobalt Drill Bit, (2) 5/32 in. Cobalt Drill Bit, (1) 11/64 in. Cobalt Drill Bit, (2) 3/16 in. Cobalt Drill Bit, (1) 13/64 in. Cobalt Drill Bit, (1) 7/32 in. Cobalt Drill Bit, (1) 15/64 in. Cobalt Drill Bit, (2) 1/4 in. Cobalt Drill Bit, (1) 5/16 in. Cobalt Drill Bit, (1) 3/8 in. Cobalt Drill Bit
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Specifications

Dimensions

Product Depth (in.)
1.5 in
Product Height (in.)
7.2 in
Product Width (in.)
9 in

Details

Bit Material
Cobalt
Drill Bit Type
Twist
Drill Bit Type(s) Included
Twist
Individual/Set
Set
Number of Pieces
29
Returnable
90-Day
Self-Feeding
No
Shank Style
3-Flat
Tools Product Type
Power Tool

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.3
    out of 799 reviews
  • 78% recommend this product
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Showing 1-30 of 799 reviews
I can tell the parts are quality but…
While drilling the first day I had 1/4 inch snap off. The bits worked well initially but im not sure why this batch gave me so much trouble
by
Response from Customer ServiceSep 21, 2021
Hello! Thank you for telling us about your experience with the 29 Pc RED HELIX™ Cobalt Drill Bit Set. We will email you for assistance. -Cayla with Milwaukee Tool
    This is absolutely the best drill set for the money...
    This is absolutely the best drill set for the money I’ve been able to find anywhere! You can tell by the weight of the bits that they have a substantial amount of cobalt. So why only 5-stars??? It’s the incredibly bad case. The plastic grips the bits so tightly that pliers are needed to remove them. This is clearly a marketing ploy; the shiny red plastic looks great in a display and it must be cheaper to supply. But shame on Milwaukee; the merits of a shiny display are IMMEDIATELY lost when the bits need to be used. Fortunately, there is a remedy; just invert the bits in the case. Most of the holes require enlargement as most of the bits have reduced shanks but you have the bits right there! Buy these bits, give Milwaukee’s marketing staff a wave of your index finger, and don’t look back!
    by
    Response from Milwaukee ToolAug 10, 2021
    Hello, this is Sarah with Milwaukee Tool. JaimeChinook, thank you for your review. I am sorry to hear about your frustrations with your Milwaukee Cobalt Red Helix Drill Bit Set for Drill Drivers (29-Piece). We'd value the opportunity to learn more about your frustrations with your Milwaukee Tool, and to provide you with support. Please feel free to contact us directly at socialmedia@milwaukeetool.com. It will be our pleasure to provide support once we have received your correspondence. Thank You
    • Verified Purchase
    2 people found this helpful
      This set has 32,768 possible values.  It's fifteen bits.
      On a related note, there are 10 kinds of people in the world—those who understand binary numbers, and those who do not.
    by
      • Recommended
      Snapped to bits
      Just picked up a brand new set, a 3/8ths drill bit in a drill, pre drilled hole snapped the bit before one full revelation drilling aluminum. I want slow and the hole was 95+ percent predrilled. Look elsewhere for drill bits
      by
      Response from Milwaukee ToolMar 5, 2021
      Hello, this is Natalie with Milwaukee Tool. Joe, thank you for taking the time to leave your review. I'm sorry to hear that your Helix Drill Bit Set for Drill Drivers was not of the standard you expected. We would appreciate the opportunity to further investigate your feedback and provide you with support, so please feel free to reach out to us directly at socialmedia@milwaukeetool.com. Thank You
        Used one of these bits to drill over 120 holes in mild steel. Used lots of oil and a drill press...
        Used one of these bits to drill over 120 holes in mild steel. Used lots of oil and a drill press. The set is a good deal over buying bits separately and they double up on common sizes.
        by
        • Verified Purchase
        • Recommended
        1 person found this helpful
        works great
        I’ve had these bits for a couple weeks now and they have worked as expected on multiple types of metal. The case is very nice and functional. These bits are great at not walking when first starting and they get a good bite into metal. I haven’t had any break so far and they seem sharp still. These meet my expectations and I don’t have anything to dislike about them. Please hit thumbs up if this was helpful.
        by
          • Recommended
          12 people found this helpful
          1/2 inch drill bit broke the first use.
          I was drilling a hole in a pole to make a tether ball pole for my son. The drill bit broke before I could completely drill the first hole. I'm taking the whole set back for an exchange. Maybe I'll have better luck with the next set.
          by
            2 people found this helpful
            cobalt drill bit
            Great for drilling 1/4" steel plate and installing hinges on gates
            by
              1 person found this helpful
              Hello Everybody , Cobalt Drill Bit is fantastic , i never seen quality like that , I make more th...
              Hello Everybody , Cobalt Drill Bit is fantastic , i never seen quality like that , I make more then 1000 hole with one Bit and it stay same shape. thanks Milwaukee to made like this quality and HomeDepot to sell it. Do Not Think Just Buy It.
              by
                • Recommended
                2 people found this helpful
                Excellent performance on hardened steel lugs
                Used these to drill through and remove two wheel lugs that had rounded off and could not be removed any other means. Drilling through this material required slow drill speeds to avoid overheating. No cutting oil was required.The attached pics show the fantastic job done by the bits in cutting through the lugs and allowing them to be easily removed by snapping the tops off.
                by
                  • Recommended
                  3 people found this helpful
                  Great tool and price
                  Great tool and price
                  by
                  • Verified Purchase
                  • Recommended
                  3 people found this helpful
                  These drills are excellent - drilled through a grade 8 bolt that had broken off in a John Deere X...
                  These drills are excellent - drilled through a grade 8 bolt that had broken off in a John Deere X540 lawn tractor drive shaft.
                  by
                  • Verified Purchase
                  • Recommended
                  2 people found this helpful
                  The Milwaukee Cobalt Drill Bit 29-Piece Set is an excellent, comprehensive set of drill bits, wi...
                  The Milwaukee Cobalt Drill Bit 29-Piece Set is an excellent, comprehensive set of drill bits, with an extensive range of drill bit sizes ranging from 1/16 inch to ½ inch in 1/64 increments. The bits themselves are very well machined, quite durable, and have excellent material-boring capability. This week I used one bit in my electric drill to bore several pilot holes through a very dense hardwood, in order to subsequently install toggle bolts. The drill bit performed absolutely effortlessly, very quickly, and shows no signs of wear whatsoever. Today I used the 7/32 bit to drill a hole through 3/16” thick steel (see picture). Again, the bit performed flawlessly and showed no signs of wear. The entire set is contained in a strong plastic storage case, in which each bit size is clearly marked.
                  by
                  • Recommended
                  1 person found this helpful
                  Well-made & sharp drill bits. This sets comes with a handy case to keep them organized. The bits...
                  Well-made & sharp drill bits. This sets comes with a handy case to keep them organized. The bits are very sharp and make quick work of drilling through anything. I was working on 2 different projects one was wood (2x4s) and it goes through like a hot knife through butter. My second project, I needed to enlarge some holes on some heavy duty casters and I was able to drill them out with ease. These are high quality drill bits and I expect them to last for years.
                  by
                  • Recommended
                  1 person found this helpful
                  I am a fan of Milwaukee products and this 29 piece cobalt drill bit set is no different. The bits...
                  I am a fan of Milwaukee products and this 29 piece cobalt drill bit set is no different. The bits come in an organized case with the exact size of the bits clearly marked. It can be a little difficult to get a bit out of the case. The cobalt bits can be used for a variety of drilling applications from plastic, wood to hard steel. I frequently drill 3/16" angle iron and occasionally thicker metals by using oil to keep the bits cool. These bits do well in hard metal with a little oil. These bits will last a long time. Great product!
                  by
                  • Recommended
                  2 people found this helpful
                  Great investment
                  Fantastic bits. Best payback on investment in my tool box. The time i save drilling holes through heavy steel compared to my titanium set payed for these bits the first week. Probably 20-30 holes with my 1/2” in and still sharp
                  by
                    • Recommended
                    I primarily do woodworking, however I sometimes need to drill through metal as well. These bits s...
                    I primarily do woodworking, however I sometimes need to drill through metal as well. These bits seem to work great for both! They are pretty pricey, but the ability to grab a bit and be able to drill a hole in just about anything makes this kit worth it to me! I tested these bits on some Jatoba wood (Very hard wood), Stainless steel, Mild steel, and some basswood (soft wood). It cut great through everything. The wood cuts were clean with no tear out (I used a backer board) and the metal holes were also smooth with very minimal burrs (sandpaper took care of the burrs). The "Red Helix" helps take wood and metal shavings out of the drill bit and eject them out the top of the hole, I noticed the bit didn't gum up in wood as much as a typical drill bit. The case is easy to use and holds the drill bits securely. I would recommend these bits for anyone who can afford them or drills into metal a lot, sure they are overkill for wood working, but they are a great all around bit.
                    by
                    • Recommended
                    5 people found this helpful
                    quality control isses... dulled and or snapped
                    I usually use another major brand cobalt bits but the store only carried these which looked promising until i tried to drill out a door lock core when these bits failed miserably. (Metal was an aluminum/brass combo)
                    by
                      • Recommended
                      5 people found this helpful
                      Met all my expectations. Was able to drill through a metal door buck with minimum resistance. Gre...
                      Met all my expectations. Was able to drill through a metal door buck with minimum resistance. Great value for money. Can also be used on wood and plastic, which is a definite plus.
                      by
                      • Verified Purchase
                      • Recommended
                      1 person found this helpful
                      Who in this world *doesn't* drill metal constantly? It seems I've been consistently drilling into...
                      Who in this world *doesn't* drill metal constantly? It seems I've been consistently drilling into various metals since I was a kid > 4+ decades ago. OF COURSE a drill bit should be able to drill into metal, easily, handily, without over-heating, dulling, requiring excess force, or breaking. Duh. Turns out the regular HSS bits I've been using all these years, the staple of the machining world, just aren't that great at drilling metal. These cobalt bits are, though. And all these years I thought it was my lack of drilling acumen. The bits are well-made, with edges nearly as sharp as glass (watch your fingers when extracting them for use from the included Milwaukee-red storage case). They readily drill into & through all the metals I generally drill holes in, including stainless steel. As far as wood & plastic go, those materials are no match for these bits, & they drill through them like a machete cuts through cheese-cake (read "easily"). These bits aren't coated, like "titanium" ones, and that's a very good thing. You can't sharpen a coated drill bit. You'll scrape the coating off and you'll have a drill bit that is now regular steel. Maybe okay for drilling holes in wood, much less than "okay" for drilling holes in metal, & you've just converted your expensive coated bits into a cheap steel set. Cobalt bits can be sharpened. The gold color of the bits isn't due to any coating, but is a by-product of the hardening process. I've yet to need to sharpen one, so don't know if it's a different color inside, like all those "titanium," or other coated bits, but they shouldn't be. Being able to sharpen a bit is a big deal, & these should sharpen up the same as any other non-coated steel drill bit. The case is handy, if not a little tight holding the bits in place. I guess with their extended life Milwaukee anticipates lots of use via they're long-life, and that there'll be plenty of extraction & insertion of bits to break the holes in after extensive use. The box keeps the bits secure, is a nice readily-visible hue, & stows nicely in my drill/driver bag. The bit-holders swing out along a pivot on the bottom. They don't flop out on their own. Note that the left two-level bit holder swings out as a single unit because it is. The bigger bits have flat sides on the shank to help prevent the bit from twisting in the drill chuck. Also note that these bits are not of a uniform type. Some have Milwaukee's advanced chip-extracting helix design & some don't. They're all cobalt, but it's a mixed set engineering-wise. I would have preferred absolute consistency with both engineered-design & the flat sides of the shank. These bits don't get excessively hot, and are aggressive, but not excessively "grabby." They "grab," but less than some I've used. More than standard steel or HSS, less than "titanium." I almost broke my arm once using a titanium bit to drill through fiberglass. Despite their effortless cutting, I still use a little cutting oil when I use them. That'll make them last longer, speed cutting, reduce friction & thus lower temperature, and also, for me at least, acts as a quick sanity-check on the state of the hole. If it's oiled, & it's pouring smoke, you know you've got a lot of friction going on and possibly a problem to accompany that friction. Also note, that despite the product's ability to readily cut through tough materials, & the marketing boast that the bits are "no walking," they walk, and they walk bad. Annoyingly badly. The larger bits include a built-in pilot hole tip (handy, but precludes sharpening!), I haven't had to drill this many pilot holes since I used cheap flea-market bits. Maybe my old hand just isn't as steady as it used to be, & I mainly use these in a portable hand-held drill, but I suspect the bits walk because they do. Check out the attached photo. It brags "no walking," which is not my experience. I was frustrated by the bits walking before I even noticed they said they don't, which just adds insult to injury. I find myself using a dimple-punch much more these days. The toothbrush is there to brush chips & debris off the drill bits after use. Aside from the bits tendency to wander on their own, these are great bits. MUCH better than HSS, or "titanium," or whatever else they might be offering at your local Home Depot, ESPECIALLY if you're as much a fiend for drilling through metal as I am. The cobalt the bits are made from is the lower of the two grades of cobalt commonly used, but that lower-grade cobalt is still way better than the coated bit-brethren. They make drilling "fun" again.
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                        • Recommended
                        1 person found this helpful
                        Milwaukee Cobalt Drill Set This review is for Milwaukee RED HELIX, Product 48-89-2338, a 23-piece...
                        Milwaukee Cobalt Drill Set This review is for Milwaukee RED HELIX, Product 48-89-2338, a 23-piece cobalt drill set. The first thing that impressed me about this product is the tough, high quality case, it equipped with steel hinge pins and a secure lid closure clipping device. This set includes two each of the most commonly used 7/64-in., 1/8-in., 3/16-in. and 1/4-in. sizes. The drills in this set are tough and have resisted breakage and have stayed very sharp during my use almost daily for the last two weeks for wood and metal working activities. I like the fact that the larger sized drills in this set (3/16-in. and larger) have three flat sides for the shanks so that they do not slip in the drill chuck. Another feature that I appreciate are the split points for the 3/16-in. and larger sized drills that reduce the likelihood of wandering when starting in hard materials like steel. I expect that the chip breaker and helix features provided for these drills will increase their life expectancies significantly when drilling into thick materials because the heliixes facilitate fast material removal, reducing the drill bit temperatures. High temperatures contribute to drill bit dulling. This is a nicely organized, quality drill set. I like it enough to have obtained a second set so that have one set for each of my two workshop areas.
                        by
                        • Recommended
                        So nice to have good drill bits. I continually go through the smaller size drill bits since I use...
                        So nice to have good drill bits. I continually go through the smaller size drill bits since I use them the most frequently. I am always picking up whatever is reasonably priced and I can get my hands on, because I know they'll wear out quickly or break. Not the case with these bits. They actually do hold up and last longer than other steel bits that I've purchased. I recommend these for long life and durability as well as accurateness. They do have a nice case to store and keep with my tools and I like that they go up to 1/2 inch in size. Well worth the money.
                        by
                        • Recommended
                        This is the 23-piece Cobalt Red Helix Drill Bit Set from Milwaukee (48-89-2338). Included in the ...
                        This is the 23-piece Cobalt Red Helix Drill Bit Set from Milwaukee (48-89-2338). Included in the set are sizes from 1/16” to 1/2”. Milwaukee smartly gives you two each of the most commonly used small sizes (1/16”, 5/64”, 7/64”, 1/8”, 5/32”, 3/16”, and 1/4”). It’s especially nice having a 1/2” drill bit in the set. I keep this set in the bag with my drill and impact driver to take on jobs. You never know what you’ll have to drill through. The case appears made well and very rugged. It’s a small thing, but I really like how the front of the case is marked with the content type, so you can easily tell whether you have the driver bits or drill bits container—makes life much easier on the job. The back of the case has a 1/4”-20 female thread for mounting the case. I can’t imagine using this for anything, but I guess someone must use it if Milwaukee puts it there. These drills are rated for “hard metal.” While I don’t usually drill through hardened or stainless steel, I’ll often need to drill various metal objects found on the job, like electrical boxes, fixtures, and such. And supposedly, the geometry of the tips (135 degree tips) prevents the bits from walking. To see how these bits would work for me, I drilled several holes, of various sizes in an older electrical junction box. This box appears to “better” steel than that used in today’s boxes. I performed the tests as I would on the job—just holding the box on top of a 2x6 and using a cordless drill (in the case of the larger bits, I stepped on the box to keep it from spinning). All the bits drilled through the steel box effortlessly. What really surprised me was how clean all the holes were—very little burr on the back side of the holes (see photos 1 and 2). I also tested the bits in wood (pine and a particularly hard piece of White Oak). As I would have expected, the bits drilled with no problems, and again, the holes were very clean. Overall I think these are great drill bits that would serve nicely on-the-job. They are pricy, but if you’re the kind of guy that tends to NOT lose your tools, these would make a good addition to your drill bag.
                        by
                        • Recommended
                        High quality drill bits….with a carry case to match. Before even looking at the drill bits, the first thing one notices is the carry case….real hinges (not breakage prone flexing plastic), a latch that can be easily latched and unlatched but not inadvertently come open while in transport and a substantial thickness of plastic to endure the rigors of being tossed into one’s tool bag or bucket. It even includes a threaded (1/4” x 20) insert on the back of the case for ? (magnet?, tripod?, tool management tag?) which is not noted in the accompanying descriptive information. Milwaukee has also (wisely) chosen to include multiples of the smaller, frequently used sizes which are more prone to damage in use (1/16”, 5/64”, 7/64”, 3/16” and ¼”). Bits 3/16” and larger have shanks with three flat lobes to inhibit slipping when drilling difficult material. These bits also incorporate a “chip breaker” tip design to minimize long pieces of metal trying to coexist in the same space as the operator. The ½ inch bit has a reduced shank (3/8”) eliminating the need to have a ½ inch chuck available. The split point design (on sizes 3/16” and larger) provides more cutting surface and minimizes “walking” of the bit, and the variable helix design facilitates quicker waste removal from the hole being drilled (which removes heat at a faster rate). The manufacturer claims a lifetime ten (10) times that of black oxide bits, which could only be corroborated after long time use. However, comparing like size bits (Red Helix vs. Milwaukee’s ThunderBolt Black Oxide bits) in drilling into 1/8 inch steel, the Red Helix bits were faster and resulted in a cleaner cut, with little if any “chattering” of the bit, allowing faster drilling. Drilling ¼ inch holes the Red Helix bit took 10 seconds vs. 15 seconds for the black oxide Thunder Bolt bit. When opening up the ¼ inch holes to ½ inch, the Red Helix zipped through in 6 seconds vs. 20 seconds for the black oxide bit. The faster time for the Red Helix was due to the lack of chattering, which allowed a faster drill speed. I additionally tried the ½ inch Red Helix bit drilling into the 1/8 inch steel with no pilot hole (or center punch). It drilled through (28 seconds) with no wandering or chattering and left a clean hole. Theoretically, since the Red Helix bits derive their performance from the cobalt steel composition (rather than a coating) when they do wear, sharpening should be possible, though replicating the split-point, chip-breaker configuration could be challenging (though, until one gets into large bit sizes above ½ inch, sharpening has fallen victim to the economics of just replacing dull bits with new ones). Overall, these bits appear to meet or exceed the manufacturer’s claims.
                        by
                        • Recommended
                        Big selection of sizes, nice case, durable enough for some abuse. The first thing that strikes y...
                        Big selection of sizes, nice case, durable enough for some abuse. The first thing that strikes you is that the case is very handy and holds all the bits very nicely. The bits rows pivot out for usage and selection. My only complaint is that with gloves, it is sometimes awkward to pivot the bit row out. Everything else is great. I recently was working with a volunteer group. Volunteers can be hard on your tools. When bits were needed, I handed them the case. These bits, along with the matching case of power driver bits, were a huge hit among the volunteers. After our day was done, everything was returned to me. I asked how the bits worked. Everyone had great praise, and they were especially happy about how well they were drilling brick. Uh oh! Brick!? I didn't envision using these on masonry! But in the end, they held up to the abuse and everyone is happy.
                        by
                        • Recommended
                        After testing the Milwaukee 23 Piece Cobalt Drill bit set on an auto repair, it is a quality set....
                        After testing the Milwaukee 23 Piece Cobalt Drill bit set on an auto repair, it is a quality set. After grinding the work surface flat, the bits did not walk or chip. They drilled into the metal quickly and created perfect, long ribbons / spirals. They took some abuse initially while attempting to drill before removing some uneven material with the die grinder and appear no worse for wear. While I can’t speak to endurance, they do compare favorably to more expensive American Made Cobalt bits I’ve owned in terms of how they cut out of the box. If they do not hold up as well, I’ll submit an updated review. The only negative is one of preference. I would prefer 23 unique sizes rather than several duplicates in common sizes. If I want backups, I’d rather buy a separate set. Then again, I’m using them for auto repair where variety is desirable, rather than contracting and installation where you may be repetitively using a few common sizes. So I won’t hold this against them.
                        by
                        • Recommended
                        Great set of drill bits. Includes the important sizes. This case is made of plastic. Each spot fo...
                        Great set of drill bits. Includes the important sizes. This case is made of plastic. Each spot for each drill bit is specific, helping keep the bit organized and in the correct position. I have a slight preference for metal cases. It is easier to drop the drill bits in and pull them out. I received this cobalt red helix drill bit kit for free to write this review.
                        by
                        • Recommended
                        Great selection of drill bit sizes! There are 23 bits in this selection. They range in size from ...
                        Great selection of drill bit sizes! There are 23 bits in this selection. They range in size from 1/16" to 1/2". This selection includes 2 of each of the following: 1/16", 5/64", 7/64", 1/8", 5/32", 3/16", and 1/4". This gives an extra one as a replacement for all the ones you break, lose or wear out. If you are drilling holes in metal these are the bits to have. The finish used on the bits and their design make it much easier to drill holes in metal especially when using a cordless drill. The bits are securely held in a nicely designed storage box. The plastic used in the box is durable. See phots and video.
                        by
                        • Recommended
                        2 people found this helpful
                        Great product as always! These Cobalt drill bits are the standard for quality. Just got them and ...
                        Great product as always! These Cobalt drill bits are the standard for quality. Just got them and already impressed how well they work. Once again Milwaukee comes through with top level quality tools for the job!
                        by
                        • Verified Purchase
                        • Recommended
                        2 people found this helpful
                        Quality Kit -plentyful sizes - Quality case
                        The Helix design is GREAT!! Fits cleanly into the chuck and "locks" in so it won't spin. The drill bits slide easily in and out of the case with ease. This seems like a little thing, but I HATE when I have to FIGHT with each drill bit as I try to remove it from the case. The other "claim to fame" for these bits is ....they last 10X longer than standard bit. I used them on 1/4 inch steel and they have done a nice job so far. Also, I like the wide array of size choices. I would recommend these bits.
                        by
                        • Recommended
                        4 people found this helpful
                        Showing 1-30 of 799 reviews