Milwaukee 48-20-3980 1-3/8in x 18in x 23in MX4 4-Cutter SDS-MAX Rotary Hammer Drill BitDescription The Milwaukee MX4 4 Cutter SDS MAX Rotary Hammer Drill Bit (3 4 in x 7 in x 13 in) is engineered for demanding concrete, rebar, and masonry applications. Built with a long lasting solid carbide head, it ensures exceptional durability and consistent performance. Its sharp centering tip provides precise spot drilling, while the 4 cutter design prevents lock up in rebar, reducing downtime. Optimized flutes efficiently remove dust, minimize