Milwaukee SHOCKWAVE™ Impact Duty™ 3/16" - 3/4" Step Drill Bit delivers -in-class performance in impact drivers and the versatility to be used in drills as well. Featuring a 1/4-inch hex shank optimized with a Milwaukee SHOCKWAVE™ body, this drill bit provides durability and significantly reduces shank breaks. It is coated with Titanium Aluminum Nitride, which extends the bit's life by five times. The Rapid Strike™ tip combined with a dual spiral flute design allows for drilling holes twice as fast. For added convenience, each bit is laser engraved with its size for easy identification. Model Number: 48-89-9243