Rebar Demon 4-cutter full-carbide head hammer bits is the first full line of bits designed to be the strongest, most durable and fastest solutions on the market.Diablo's ultra-hardened, full-carbide head bits withstand the stress of high powered hammer drills and the impact of rebar cutting, delivering extreme durability and strength. Produced with Tri-Metal Diffusion Bonding technology, the full-carbide head resists heat and prevents breakage for maximum life and productivity. Precision Tip delivers the stability and accuracy required to produce fast, precise holes in concrete.