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5/8 in. x 21 in. 4-Cutter SDS-MAX Carbide Drill Bit

$67.97
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  • 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 exact spot drilling in concrete & metal decking
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Product Details

4-cutter design prevents lock-up in rebar, reducing downtime

Milwaukee MX4 4-Cutter SDS MAX Rotary Hammer Drill Bits

4-cutter design prevents lock-up in rebar, reducing downtime

Ideal for concrete with rebar and masonry applications

MX4 4-Cutter SDS MAX Rotary Hammer Drill Bits

Ideal for concrete with rebar and masonry applications

Solid head carbide for up to 5x longer life in concrete with rebar

MX4 4-Cutter SDS MAX Rotary Hammer Drill Bits

Solid head carbide for up to 5x longer life in concrete with rebar

SDS MAX Rotary Hammers

For Use With

SDS MAX Rotary Hammers

Up to 5x Longer Life in Concrete with Rebar

Up to 5x Longer Life in Concrete with Rebar

Up to 5x Longer Life in Concrete with Rebar

For 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

German Made

For Use In Reinforced Concrete, Brick and Block

For Use In

For Use In Reinforced Concrete, Brick and Block

Drilling in Reinforced Concrete

Reinforced Concrete

Drilling in Reinforced Concrete

Drilling in Concrete

Concrete

Drilling in Concrete

Drilling in Brick

Brick

Drilling in Brick

Drilling in Block

Block

Drilling in Block

Variable Flutes For Up to 15% More Holes Per Battery Charge

Up to 15% More Holes Per Battery Charge

Variable Flutes For Up to 15% More Holes Per Battery Charge

The Milwaukee SDS-MAX 4-Cutter MX4 5/8 in. X 15-1/2 in. X 21 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. The integrated 4-cutter design prevents lock-up in rebar, reducing downtime. Variable flutes remove dust faster, reducing heat and delivering up to 15% 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 15% 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-MAX rotary hammers
  • Shop All Milwaukee 4-Cutter Bits
  • Return Policy

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

10Questions
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Q:Will this bit work with a non SDS hammer drill?
by|Jan 10, 2023
1 Answer
Answer This Question

A:  Hi Neil- No, this bit is designed for use with SDS MAX Rotary Hammers.

by|Jan 10, 2023
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    Q:Should this work in a 2723-20 d handle rotary hammer?
    by|Oct 4, 2022
    1 Answer
    Answer This Question

    A:  Hi Ryan- These bits are optimized for use with SDS MAX Rotary Hammers

    by|Oct 25, 2022
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      Q:Will this fit a 2-5/8 bit?
      by|Dec 2, 2021
      1 Answer
      Answer This Question

      A:  Hi Chris, the Milwaukee 9/16 in. x 21 in. MX2 SDS-Max Carbide Bit fits all SDS-MAX rotary hammers,

      by|Dec 4, 2021
        caret
        Q:how deep does this bit drill.
        by|Sep 5, 2021
        1 Answer
        Answer This Question

        A:  Hi Isac, the usable length is 7-1/2”.

        by|Nov 15, 2022
          Showing 1-4 of 10
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          Customer Reviews

          4.6 out of 5
          (175)
          • 4.6
            out of 175 reviews
          • 86% recommend this product
          Filter by:
          Showing 1-10 of 175 reviews
          Very strong...
          Very strong
          by
          • Verified Purchase
          Bosch wild bore is better
          I used this bit for granite in my yard. It worked for a while but was slower and eventually broke. I found the Bosch wild bore to be faster and better. I can get 3 holes per battery vs 2 with the Milwaukee.
          by
            Drill Bit--Excellent!
            The Milwaukee Carbide Drill Bit is an excellent product. Following the Milwaukee standard, it is forged to enable concrete drilling and get it done right. Have been using a ¾ inch by 7 ½ inch concrete bit in a Milwaukee 1-1/8 Rotary Hammer and dropped a hole in 60 seconds, where a regular masonry bit required 5+ minutes. Also, the bits have a very small tendency to “wander” when starting the hole due to the bit’s head construction. While I have not drilled with this specific bit, it is of the same character as others I have used. And, if you may need to drill in concrete often, Milwaukee offers 1-9/16 and 1-3/4 chucks on their larger Rotary Hammers. If you are an infrequent driller, you may wish to consider rental options. Recommend the Drill Bit as a solid product – good depth reach and bit life
            by
            • Recommended
            Can't have enough drill bits if you have a rotary hammer. This Milwaukee 1-1/2in SDS Max carbide ...
            Can't have enough drill bits if you have a rotary hammer. This Milwaukee 1-1/2in SDS Max carbide drill bit is about as big as you want to get before thinking of needing coring bits but still has a lot of uses, particularly if you are running pipe through masonry or drilling drainage holes. I don't often use a bit this size, but when I do its invaluable. Paired with my Bosch it works great, but any standardized SDS Max will fit and should work fine. The carbide tips will give it a long life and serve you well.
            by
            • Recommended
            This drill bit measures approximately 22 1/2" top to bottom. The shaft is about 5 1/2" while 17 1...
            This drill bit measures approximately 22 1/2" top to bottom. The shaft is about 5 1/2" while 17 1/2" is the drill rings. It's about 1 1/2" thick at the tip and gradually decreases to about 1" thick down the drill bit. This is a very heavy duty and sturdy bit, but unfortunately we don't have the right drill that this bit will fit into, so just be careful and know what size you need before ordering.
            by
            • Recommended
            I made a mistake when I ordered this Milwaukee 1-1/2 in. x 23 in. SDS MAX Carbide Drill Bit and I...
            I made a mistake when I ordered this Milwaukee 1-1/2 in. x 23 in. SDS MAX Carbide Drill Bit and I should have known better based on the large size of the drill bit. I have a hammer drill that accepts SDS drill bits but I did not realize there was a difference between SDS and SDS max so I found that I did not have a SDS max drill. Since the drill bit is an enormous 1 ½ inches across, there was no way it was going to fit in the drill I have. I guess I should have read up before ordering. It turns out the shank for SDS drill bits is 10 mm and the SDS max shank is 18 mm. To be able to complete my current project, I had to borrow a drill from a neighbor who happened to have a SDS max drill. Once I had the drill, I set about my project drilling some weep holes through my concrete retaining wall. This drill bit made quick work of the project and I did not have any issues completing the job. The drill bit is intended to drill in concrete with rebar. I don’t really know if I hit any rebar but if I did, I didn’t notice which probably means I didn’t. In any event, this is an excellent drill bit and I would definitely recommend it.
            by
            • Recommended
            The Milwaukee 1-1/2 inch X 23 inches SDS Max carbide drill bit is a very heavy duty bit and requires a heavy duty SDS Max rotary hammer drill. This large size and 23 inch length is great for drilling a foundation wall to install a small water pipe or other utility services. It is also great for drilling concrete to install rebar when adding an addition on to an existing foundation. This bit has a four cutter design to easily cut through concrete with rebar and other masonry materials. The flutes are designed to remove more dust faster reducing heat and drill holes faster. It even has wear mark indicators to show when it has reached end of life. It's made in Germany and makes a great addition to my heavy duty drilling tools.
            by
            • Recommended
            1 found this review helpful
            I received my Milwaukee 1-1/2-inch SDX MAX carbide drill bit today; this bit has a solid carbide head and is 23 inches long. This Milwaukee bit has a four-cutter head design that will drill into concrete with embedded rebar without binding. In my experience with Milwaukee MAX carbide bits, they last longer than other brands I have used. These Milwaukee bits are not inexpensive, but they work so well that I do not use any other brands for concrete work.
            by
            • Recommended
            This Milwaukee 1-1/2 inch carbide drill bit is a SDS MAX bit and rightfully so since you will nee...
            This Milwaukee 1-1/2 inch carbide drill bit is a SDS MAX bit and rightfully so since you will need either a spline or SDS MAX type hammer drill to complete holes of this size. Weight of the drill bit is quite impressive and depending where you plan on completing 1-1/2 sized holes will require a very stout SDS MAX hammer drill. Suggestion is to start small making a pilot hole with a smaller diameter bit and work yourself up to the 1-1/2 inch diameter. Length of this bit is 23 inches long so you will have plenty of depth capacity using this bit. Quality throughout and will definitely last your lifetime. Only complaint is there is no protective case or tubing similar to what Milwaukee provides with their smaller diameter sized SDS MAX drill bits.
            by
            • Recommended
            13 found this review helpful
            This Milwaukee 1-1/2 inch x 23 inch SDS MAX Carbide Drill Bit was chosen for some serious work ah...
            This Milwaukee 1-1/2 inch x 23 inch SDS MAX Carbide Drill Bit was chosen for some serious work ahead. We are doing a foundation for a storage shed and boring holed for anchors. This is my first carbide tipped masonry bit this diameter and “WOW, does this do the job!” My 18 volt drill handled the work as well as the A/C model hammer drill and did away with dragging around extension cords. The bit clears all but a little debris from the hole and a soda straw provides enough “blow” to clear it. I did not get to check for drilling through rebar as on these occasions I missed all of them.
            by
            • Recommended
            3 found this review helpful
            Showing 1-10 of 175 reviews

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