SHOCKWAVE step drills are the toughest and fastest solution for drilling holes. They provide best-in-class performance in impact wrenches, but are also drill and screwdriver compatible. The 7/8 - 1-1/8” drill bit has 2 laser engraved stages for a clear stop for size identification. Titanium and Aluminum Nitride (TiAlN) coating extends life up to 5X and the optimized SHOCKZONE system reduces premature rod breakage. The Rapid Strike tip and double spiral groove increase the drilling speed by 2 times. The bit is made of a special alloy that increases its wear and deformation resistance.