Diablo's revolutionary, most complete range of SDS-Plus and SDS-Max Rebar Demo 4-cutter full-carbide head hammer drill bits are the only bits designed to be the most durable, fastest and coolest solutions on the market. Produced with Tri-Metal Fusion Welding, the full-carbide head resists heat and prevents breakage in extreme impact situations. Precision Tip delivers the stability and accuracy required to produce fast, precise holes in reinforced concrete for anchor setting.