Milwaukee SDS-MAX MX4 3/4" X 30" X 36" drill bits are engineered to deliver exceptional performance and durability for concrete and masonry applications. 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 when drilling through concrete with rebar. Designed with rebar guards, they ensure maximum durability in tough aggregate and rebar conditions. The sharp centering tips allow for precise spot drilling, while the integrated 4-cutter design prevents lock-up in rebar, minimizing downtime. Optimized flutes efficiently remove dust, reducing heat buildup and enabling up to 15% more holes per battery charge. Additionally, each drill bit includes a wear mark indicator to signal when it no longer meets ANSI standards, helping you maintain optimal performance on the job. Model Number: 48-20-3936