Milwaukee SDS-MAX MX4 5/8" X7" X 13" drill bits are engineered to deliver exceptional performance and durability in concrete with rebar. Featuring the MILWAUKEE® MX4™ 4-Cutter SDS Max Rotary Hammer Drill Bits with solid head carbide, these bits provide up to five times longer life d to standard bits. Designed with rebar guards, they maximum toughness in hard aggregate and rebar, while the sharp centering tips ensure precise spot drilling. The integrated 4-cutter design prevents lock-up in rebar, minimizing downtime and increasing efficiency. Optimized flutes help remove dust faster, reducing heat buildup and enabling up to 15% more holes per battery charge. Each bit includes a wear mark indicator to signal when it no longer meets ANSI requirements. These drill bits are i for concrete with rebar and masonry applications, combining durability and precision for professional results. Model Number: 48-20-3916