IRWIN® Unibit® 10220 Step Drill Bit, #20 Drill, 8 -Hole Size, 9/16 in Min Hole Size, 1 in Max Hole Size, 3-Flat Shank Electric Charcoal Lighters Anchor into marine docks above

Anchor into marine docks above or below water line

Ferrous Metals

Thread Size: M4

Steel and Cobalt Cutting Edge

1020085 Series

IRWIN® Unibit® 10220 Step Drill Bit, #20 Drill, 8 -Hole Size, 9/16 in Min Hole Size, 1 in Max Hole Size, 3-Flat Shank Electric Charcoal Lighters Anchor into marine docks aboveIRWIN Step Drill Bit, #20 Drill, 8 Hole, 9 16 in Minimum Hole, 1 in Maximum Hole, Step Increments: 1 16 in, 1 8 in Step Length, 2 7 16 in Overall Length, 3 Flat Shank, 7 16 in Shank Diameter, HSS, Finish: Black Oxide, Applicable Materials: Aluminum, Brass, Copper, Laminate, Plastic, Stainless SteelFeatures: Single flute cutting edge for greater control through steps 3 flatted shank prevents slipping in drill chuck Patented single flute cutting edge