IRWIN® Unibit® 10234 Self-Starting Step Drill Bit, #4 Drill, 12 -Hole Size, 3/16 in Min Hole Size, 7/8 in Max Hole Size Duct Knives Side pull handles

Side pull handles

54 in Overall LengthFeatures:

Grip Range: 3/8

Fixture Color: Black

IRWIN® Unibit® 10234 Self-Starting Step Drill Bit, #4 Drill, 12 -Hole Size, 3/16 in Min Hole Size, 7/8 in Max Hole Size Duct Knives Side pull handlesIRWIN Self Starting Step Drill Bit, #4 Drill, 12 Hole, 3 16 in Minimum Hole, 7 8 in Maximum Hole, Step Increments: 1 16 in, 2 7 8 in Overall Length, Hex Shank, 3 8 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 Hex shank prevents slipping in drill chuck New SpeedPoint tip penetrates faster than previous