Lasts up to 3x longer than a standard drill bit - Drilling through reinforced concrete is a tough job, and it has traditionally taken its toll on drill bits. Regular two-cutter bits get stuck in rebar and they eventually break. The Full Carbide Head on the EXPERT SDS plus-7X is an advanced 4-cutter design made from a single piece of the toughest metal: It doesnt jam and presents no weakness on impact. Thanks to Bosch Carbide Technology and the Full Carbide Head, the EXPERT SDS plus-7X lasts far longer t...