The SDS-Max MX4™ 4-Cut Drill Bits from Milwaukee Tool feature a large, innovative carbide tip with patented rebar chamfers to reduce vibration and prevent jamming when drilling through reinforced concrete. The robust 4 x 90° symmetrical head geometry, centering point, and dynamic secondary cutters ensure precise, fast drilling with optimal guidance. Reinforced flute design and deep shoulders enable efficient dust removal, lower heat build-up, and improved energy transfer, while wear marks maintain diameter accuracy for anchor applications. With enhanced carbide content, shot-blasted surface treatment, and PGM conformity, these bits deliver long life, smooth performance, and consistently precise holes.