This 5-piece Faithfull Cobalt Quick-Change Impact Drill Bit Set offers superior performance with a revolutionary tip design featuring 7 cutting edges and 3 peaks. Manufactured from M35 HSSE grade steel with a 5% cobalt content, these bits provide increased heat resistance and durability. The self-centring design ensures precision drilling, even on curved surfaces, while the 1/4-inch quick-change shank allows for quick and easy bit changes in impact drivers.