Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch with Easy-to-Read Step Markings and Targets, 3/8-Inch Hex Shank
Brand: Klein Tools
Two flutes cut faster and keep bit cooler
Fast-starting, non-walking drill tip
High-visibility silver targets for primary hole sizes
Thick 3/8-Inch hex shank won't round out in the drill chuck for a more positive grip
3 hole sizes