DeWALT DW5822 4-Cutter High-Impact Rotary Hammer Drill Bit, 1-1/8 in Dia, 22-1/2 in OAL, Helix Flute, 4-Flute

SDS Max high-impact carbide 4-cutter drill bits are manufactured with IRON BLAST TECHNOLOGY, a process that strengthens the bit to resist fatigue and results in extreme durability. The redesigned, 4-cutter carbide head offers 2X longer life and even stands up to rebar strikes. These bits are made in Germany and are assured TOUGH so tough that we are offering a NO BREAK GUARANTEE. If you have our bits, we have your back.