Diablo’s Rebar Demon 4-Cutter Full Carbide Head Hammer Drill Bit & Chisel Set delivers maximum performance， extreme durability and longer life in concrete with rebar and other concrete applications. Featuring Rebar Demon， the first full line of 4-cutter full carbide head hammer drill bits， these bits are the strongest， most durable and fastest solutions on the market. Diablo’s ultra-hardened， Dura-Carbide withstands the stress of high-powered hammer drills and the impact of rebar cutting， delivering extreme durability and strength when drilling holes for anchor setting. Diablo chisels deliver extreme durability and stability in general demolition work， adjustment work， restoring joints and clearing reinforcements. The chisel’s unique heat treatment strengthens the steel body to withstand the stress and impact of high-powered hammer drills in concrete. This set is optimized for maximum performance in corded and cordless SDS Plus rotary hammers.