The MILWAUKEE® SDS-MAX 4-Cutter MX4™ 1-1/8″ X 17″ X 21″ Drill Bits feature carbide heads that deliver up to 4x 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 removes dust faster for up to 15% more holes per battery charge
- German made
- Meets ANSI B212.15 to fit common anchors
- Ideal for concrete with rebar and masonry
- Fits all SDS-MAX rotary hammers
- 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
- Variable flutes for up to 15% more holes per battery charge
Jewel Haag (verified owner) –
i had purchase 3 sizes and the 3/4 was not needed but the 5/8 and the 1″ have been fantastic, goes thru concrete like wood and if it hits the steel it does not break
Adell Daugherty (verified owner) –
Gets Through the concrete
Murray Mante (verified owner) –
This bit drilled quickly and effortlessly. I recommend the Concrete With Rebar bit weather you expect to encounter rebar on the job that the bit is being purchased for or not. Expect the unexpected, such as hard gravel or other embedded metal or hard debris. This is the line of bits for the job.
Brady Stroman (verified owner) –
The Bosch was a better bit
Arvilla Medhurst (verified owner) –
Very well made as are all of Milwaukee’s tools. SDS tools are easy mounting and easy to remove, no keys necessary. These bits cut like a dream. Shank is precision ground to fit SDS MAX tools. Very fast and smooth cutting. The way the carbide is shaped and sharpened it should hold up for a lot of holes.Photos would show little so I have none with this review.
Sunny Towne (verified owner) –
Strong gets a lot of use stays sharp
Keyshawn Weimann (verified owner) –
Exelente! And good price
Branson Kemmer (verified owner) –
Awesome, works great!!!
Elsa Crona (verified owner) –
Works excellent, will go through what ever is buried in the concrete.
Hermann Lemke (verified owner) –
very easy to use
Laverne Kiehn (verified owner) –
I needed to get a hole in a brick wall for a new gas line. This bit really did the job. Made short work of a big job.
Ludie Fadel (verified owner) –
Drills into concrete like a hot knife goes through butter.
Alaina Gerlach (verified owner) –
Awesome
Kole Orn (verified owner) –
I used the heck out of it and it didn’t break
Ashly Bogan (verified owner) –
This is a well made (in Germany) concrete bit (suitable for rebar contact) for use with SDS-MAX hammer drills. It is advertised as a 4 cutter bit, two full width and two partial (see photo). The “variable flute” design (which is deeper than other bits I have used) results in faster and more complete evacuation of drilling “dust” from the hole being drilled, with less frequent need to pull the drill out of the hole to clean the hole. The carbide protrusions on the side (for encounters with rebar) are longer in length and do not stick out as far as other bits, increasing their resistance to damage. I did not get a chance yet to see how it performs with rebar present, but in an unreinforced 4 inch concrete slab, it drilled through like it was butter. All four of the cutting surfaces communicate with the flutes, for material removal, not just the primary full width cutters. The manufacturer claims 20% faster drilling than others, and, based on the reduced frequency of stopping to remove the drilling residue alone, I have no reason to doubt it.
Eve Botsford (verified owner) –
This bit is awesome, fast cutting and low vibration, it made easy work of my project.
Easton Tromp (verified owner) –
Good bit, fast drilling
Gerardo Kuhn (verified owner) –
Excellent
Reese Howell (verified owner) –
Awesome drill bit, amazed it does exactly as stated. Blew threw concrete and rebar.
Ruby Morissette (verified owner) –
I was a bit hesitant to buy Milwaukee brand but since it was the only brand available at the store that day that had the diameter size I needed. I used this drill bit in recently poured concrete post, to install a retrofit bolt anchor. Worked well and made easy work of drilling on the concrete.