Diablo Rebar Demon 4-cutter full-carbide head, REBAR rated hammer drill bit. SDS Plus: 1/2' x 6" x 8". Rebar Demon bitsfeature up to 2X more Dura-Carbide to withstand up to 1800 degrees Fahrenheit, whereas standard bits fail at 800 degrees Fahrenheit. Diablo's impact resistant 4-cutter full-carbide head withstands the stress of high-powered hammer drills and the impact of rebar by taking small bites of rebar to deliver controlled carbide wear, reduced vibration and up to 7Xlonger life. 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.