Product Description Champion Cutting Tool Proline SDS MAX hammer bits are industrial quality hammer bits for drilling in concrete and other hard masonry materials using an SDS MAX Rotary Hammer Drill. They feature, unique tip geometry, reinforced flutes, and BC20 grade carbide for faster and longer drilling. 4 Cutter Cross Head design enhances hole roundness and rebar cutting. From the Manufacturer CM96 SDS Max Hammer Bit 4 Cutter Cross-Head are for use in concrete and hard masonry materials. Ideal for pipe, electrical, cable and wiring clearances, as well as ceiling and wall cavities. Unique carbide geometry and centering tips for easy start up and drilling. BC20 grade of carbide, designed specifically for relevant materials.