48-20-3932 Milwaukee SDS-MAX Rotary Hammer Drill Bit, 3/4" x 16" x 21"Description The Milwaukee MX4 4 Cutter SDS MAX Rotary Hammer 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. Milwaukee designed our MX4 4 Cutter bits with sharp centering tips for exact spot drilling in concrete. The integrated 4 cutter design prevents lock up in rebar, reducing downtime. Optimized flutes remove dust faster,