Double fluted step drill bit. Its two flutes cut faster and keep bit cooler. It has fast-starting, non-walking drill tip. It has high-visibility silver step targets for primary hole sizes. Its thick 3/8 inch hex shank provides a firm, positive grip and won't spin out in the drill. It has 9 hole sizes.
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
Made from high speed steel
1/8-Inch to 1/2-Inch (3.2 to 12.7 mm), 13-Step sizes