Our MX4 4-Cutter SDS MAX Rotary Hammer Drill Bits with solid head carbide deliver up to 5x longer life in concrete with rebar. Engineered with rebar guards to provide maximum durability in hard aggregate and rebar. We designed our MX4 4-Cutter bits with sharp centering tips for exact spot drilling in concrete. The integrated 4-cutter design prevents lock-up in rebar, reducing downtime. Optimized flutes remove dust faster, reducing heat and delivering up to 15% more holes per battery charge. The wear mark indicator on each drill bit shows us when they no longer meet the ANSI requirement. These Milwaukee MX4 4-Cutter Drill Bits are ideal for concrete with rebar and masonry applications.
WARNING: Proposition 65 Warning for California Residents View Details
Up To 2X Life vs. Bosch: DeWalt Elite Series 5/8" x 21" SDS MAX drill bit DW5809 vs. Bosch HC5021 drilling C35/C45 concrete
Long Life In Hard Concrete: Patented carbide tip geometry with 4 cutting edges breaks up hard concrete with ease
Rebar Strike Resistant: Designed to resist breakage when striking rebar
No Break Guarantee: If your drill bits fails for any reason while the anchor wear mark is still visible on the product flute, DeWalt will replace it free of charge
Iron Blast Technology: High speed blasting strengthens the bit to reduce the risk of breakage
Controlled Penetration Into Concrete: Pilot point design for quick starts into the material and accurate holes
Fast Drilling: Optimized flute design removes dust quickly from the hole for fast drilling
Anchor Wear Mark Indicator: For drilling accurate hole diameters when using the bit to install anchors. Located on the flute of the bit, once the wear mark is no longer visible it is time to change the bit for proper anchor installation.