KTSB14 - 12-Step Drill Bit, 3/8-Inch Hex, Double Straight Flute, 3/16-Inch to 7/8-Inch

Step bits are coated with aluminum titanium nitride and are 10 times more durable than steamed black oxide coating for longer bit life Double, straight flute removes chips for clean cuts and drilling Durable, 3/8-Inch hex shank provides a firm, positive grip and won't spin out in the drill Laser markings are easy to read for quick size identification Fast-starting, non-walking drill tip For use on steel (up to 16 gauge), wood, plastic, and aluminum 3/16-Inch to 7/8-Inch (4.8 to 22.2 mm), 12-Step sizes