Step Drill Bit, Shank Size 3/8 In, Number of Hole Sizes 12, Step Thickness 1/8 In, Sizes 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8 In, Bit Length 3 5/16 In, Material High Speed Steel With Oxide Coated Finish, Design Double Flute Cutting Edge, 3 Flatted Shank, Non-Skid Self-Starting Tip
Step Drill Bit Kits- Double flute design has 2 cutting surfaces for mild steel, copper, aluminum, brass, wood, plastics, and laminates. No pilot hole needed. High-speed steel with oxide-coated finish. Nonskid self-starting tip with 3-flatted shank and 3/8" hex arbor hole. Includes 3/8" shank. 1ANZ6 kit includes 3 step bits.