Features and Benefits:�Up to 5x longer life in concrete with rebar�Rebar guards for increased durabilty in hard aggregate and rebar�Sharp centering tip for exact spot drilling in concrete and metal decking�Lock Up�Variable flutes for 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 masonryThe MILWAUKEE® SDS MAX 4-Cutter MX4™ 1-3/8" X 18" X 23" Drill Bits deliver up to 5X longer life in concrete with rebar. Engineered with rebar guards to provide maximum durability in hard aggregate and rebar with a sharp centering tip for exact spot drilling in concrete. The integrated 4-cutter design prevents lock-up in rebar. Variable flutes remove dust faster, reducing heat and delivering up to 15% more holes per battery charge. This drill bit features wear mark indicators to show end of life and when bit no longer meets the ANSI requirement. The Milwaukee MX4™ 4-Cutter Drill Bits are ideal for concrete with rebar and masonry applications.