$62.97
Pay $37.97 after $25 OFF your total qualifying purchase upon opening a new card. 
Apply for a Home Depot Consumer Card- Solid head carbide for up to 5x life in concrete with rebar
- Rebar guards for maximum durability in hard aggregate and rebar
- Centering tip for spot drilling in concrete & metal decking
- View More Details
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy
Product Details
Milwaukee MX4 4-Cutter SDS PLUS Rotary Hammer Drill Bits
4-cutter design prevents lock-up in rebar, reducing downtime
MX4 4-Cutter SDS PLUS Rotary Hammer Drill Bits
Ideal for concrete with rebar and masonry applications
MX4 4-Cutter SDS PLUS Rotary Hammer Drill Bits
Solid head carbide for up to 5x longer life in concrete with rebar
For Use With
SDS PLUS Rotary Hammers
Up to 5x Longer Life in Concrete with Rebar
Up to 5x Longer Life in Concrete with Rebar
Solid Head Carbide
For Up to 5x Longer Life in Concrete with Rebar
German Made
German Made
For Use In
For Use In Reinforced Concrete, Brick and Block
Reinforced Concrete
Drilling in Reinforced Concrete
Concrete
Drilling in Concrete
Brick
Drilling in Brick
Block
Drilling in Block
Up to 20% More Holes Per Battery Charge
Variable Flutes Removes Dust Faster For Up to 20% More Holes Per Battery Charge
The Milwaukee SDS-PLUS 4-Cutter MX4 1-1/8 in. X 16 in. X 18 in. Drill Bits feature solid carbide heads that deliver up to 5x longer life in concrete with rebar. Engineered with rebar guards to provide maximum durability in hard aggregate and rebar. MX4 4-Cutter bits are designed with sharp centering tips for exact spot drilling in concrete and metal decking. The 4-cutter design prevents lock-up in rebar, reducing downtime. Variable flutes remove dust faster, reducing heat and delivering up to 20% more holes per battery charge. Wear mark indicator shows users the end of life when the bits no longer meet the ANSI requirement. The Milwaukee MX4 4-Cutter Drill Bits are ideal for concrete with rebar and masonry applications.
- 4-cutter design prevents lock-up in rebar, reducing downtime
- Variable flutes remove dust faster reducing heat & delivering up to 20% more holes per battery charge
- German made
- Meets ANSI B212.15 to fit common anchors
- Wear mark indicator to show end of life and when bit no longer meets the ANSI requirement
- Ideal for concrete with rebar and masonry
- Fits all SDS-PLUS rotary hammers
- Shop All Milwaukee 4-Cutter Bits
- Return Policy
Specifications
Questions & Answers
11Questions
Q:How many 6 deep holes in non-reinforced concrete can be drilled before the bit becomes dull?
by|Oct 31, 2023
1 Answer
Q:Will this bit drill through rebar?
by|Sep 7, 2023
1 Answer
Q:Can this be used in a 3/8 rotary drill
by|May 7, 2023
1 Answer
Q:Will this fit a sds plus hammer drill?
by|Jan 9, 2023
1 Answer
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Jun 1, 2023
Flatter than a pancake after 2 holes
I Drilled 2 holes and never made it through the second one. I was only drilling brick and didn’t even hit rebar. Definitely not up to the standards of quality I’ve come to expect from a Milwaukee product.
by
Response from Milwaukee ToolJun 5, 2023
Thank you for taking the time to review your Carbide Drill Bit and we are sorry to hear about your experience. Could you send our team an email at Social.media@milwaukeetool.com, so we can assist? Thank you - Milwaukee Tool, Social Team
Feb 1, 2023
Supposed to be good for concrete with rebar
Bought two of these in case one fails. Good that I did buy two. My concrete has 6x6 steel wire mesh in it. My second hole I must have hit a rebar wire and it destroyed the bit.
I have used the second bit to drill 8 more holes without issue.
by
Nov 15, 2022
Disappointed
First 2 mx4 5/32 drill bits destroyed in minutes working in concrete with rebar.
At least in this size arent durable.
The 3rd mx 5/32 last longer to finish the job
by
Oct 26, 2022
Drilled 42 holes 10” deep in hard gneiss with little...
Drilled 42 holes 10” deep in hard gneiss with little wear.
by
Jul 12, 2022
7/8" bit but 29/32" Hole.
Installing my MaxJax in new concrete with Wej-it (toggler.com) Epoxy anchors, I drill 1 hole and discover the fitment is loose. I then measure the bit and find 2 tips measure 7/8", but the other 2 measure 29/32" (see pictures)
As I was on a time crunch, I ground-down the 2 tips that were way out of spec and finished the job, albeit slowly.
So, the bit CAN do the job, and I might have gotten a manufacturing defect unit, but it's a crappy thing to discover when you "have to get the job done now"
by
Nov 2, 2021
3/8" drill bit
I bought this to drill holes in 6x6 landscaping timbers. I anchored the bottom timber into the ground with 1/2" by 2 ft rebar
by
Oct 26, 2021
Bought to drill holes to install anchors for a MaxJax car lift.
Drilled 10 holes with ease.
by
Jun 6, 2021
Broke during 1st drill.
Bit snapped after 1st usage. It would not drill in the concrete. HD did not have this size in different brand so I went to another store and purchased a Dewalt bit and it drilled the 16 holes within minutes. It might have been a fluke but after breaking this bit, losing $ 16.97 and a few hours of my time I would not recommend the Milwaukee drill bit.
by
Response from Milwaukee ToolJun 15, 2021
Hello, this is Sarah with Milwaukee Tool. Hoodooyouknow, thank you for your review. I am sorry to hear about your frustrations with your Milwaukee 3/16 in. x 12 in. MX4 SDS-Plus Carbide Bit. 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
Feb 4, 2021
This drill bit is a beast!
This is the biggest SDS Plus bit they sell in store and it is a beast. I had to drill a hole through 4” concrete and this bit ate through the concrete within 20 seconds
by
Jan 23, 2021
Purchased this to drill a 6” diameter sewer drain hole through a 6” thick foundation stem wall an...
Purchased this to drill a 6” diameter sewer drain hole through a 6” thick foundation stem wall and it only took about 45 minutes !! Worked perfectly for the job it needed to accomplish
by
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