Bosch Expert 7x drill bit - for concrete reinforced concrete granite hardened concrete gneiss - 30 pieces

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 doesn't jam and presents no weakness on impact.