The 3/4" X 17" X 21" 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 you when they no longer meet the ANSI requirement. These MILWAUKEE® MX4™ 4-Cutter Drill Bits are ideal for concrete with rebar and masonry applications.

• Solid head carbide delivers up to 5x longer life in concrete with rebar
• Rebar guards for maximum durability in hard aggregate and rebar
• Sharp centering tip for exact spot drilling in concrete and metal decking
• Lock Up
• Optimized 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 Indicators 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