KTSB11 Klein Tools Step Drill Bit Double Fluted #11

These Double-Fluted Step Drill Bits provide faster cutting and drilling than single flute bits. The easy-to-read step markings and targets save time when drilling holes. Thick 3/8-inch hex shank provides a firm, positive grip and will not spin out in the drill. These Double-Fluted Step Drill Bits provide faster cutting and drilling than single flute bits. The easy-to-read step markings and targets save time when drilling holes. Thick 3/8-inch hex shank provides a firm, positive grip and will not spin out in the drill.