The Milwaukee SDS-MAX 4-Cutter MX4 3/8 in. X 7 in. X 13 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
Gerard Cormier (verified owner) –
Awesome drill bit, amazed it does exactly as stated. Blew threw concrete and rebar.
Raheem Reilly (verified owner) –
The Bosch was a better bit
Abdul Schiller (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.
Coby Ebert (verified owner) –
Bit’s lifetime could be better, 9 holes and it was dead.
Daphne Heidenreich (verified owner) –
Works excellent, will go through what ever is buried in the concrete.
Alysson Moore (verified owner) –
Put my pool guy out of business!
Neva Anderson (verified owner) –
I needed to drill a bunch of 2″ deep, 3/4″ holes in a well cured concrete slab. This bit did a great job, drilling the holes in no time. I found that I got the best results if I supported some of the weight of the drill. The entire weight of the drill was too much pressure on the bit for optimum drilling speed.After a dozen holes, you could hardly tell the bit had been used. This is a well made bit, and I expect to drill a lot of holes with it. It should easily last me for the rest of my life…
Miller Ferry (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.
Carolanne Durgan (verified owner) –
Awesome
Katrine Bednar (verified owner) –
Excellent performance
Vilma Bogan (verified owner) –
It was okay for about the first 15 holes and then it lost it’s ability to continue making holes in the concrete. The Hilti bit that I had before made about 40 holes in the same concrete.
Elnora Kreiger (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.
Liam Kohler (verified owner) –
Exelente! And good price
Dewitt Boehm (verified owner) –
made the job with no effort.
Neal Beatty (verified owner) –
Strong gets a lot of use stays sharp
Marlene Wolf (verified owner) –
Expectacular
Frederick Gorczany (verified owner) –
Drills into concrete like a hot knife goes through butter.
Earl Muller (verified owner) –
A mean tool
Therese Cole (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.
Allie Zemlak (verified owner) –
Excellent tools and accessories.