The SDS plus-3 drill bit offers durability when drilling into concrete. To prevent heat buildup, the 4-flute Dura-Design ensures effective chip removal and increases longevity. It is made from high-alloy steel manufactured with optimized hardening technology to resist wear. For added toughness, the notched cutting edges are made from a Bosch-controlled ideal carbide mixture. As a mark of quality, the drill bit carries the quality test mark from the PGM Masonry Drill Bit Association Board, which guarantees compliance with strict tolerances, precise drilling, and a secure hold of fastening materials.