Features and Benefits:Solid head carbide delivers up to 5x longer life in concrete with rebarRebar guards for maximum durability in hard aggregate and rebarSharp centering tip for exact spot drilling in concrete and metal deckingLock UpVariable flutes remove dust faster reducing heat delivering up to 15% more holes per battery chargeGerman MadeMeets ANSI B212.15 to fit common anchorsWear Mark Indicators to show end of life and when bit no longer meets the ANSI requirementIdeal for concrete with rebar and masonryThe MILWAUKEE SDS MaX 4-Cutter MX4 3/8″ X 7″ X 13″ 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 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.