IRWIN® Unibit® 10233 Self-Starting Step Drill Bit, #3 Drill, 9 -Hole Size, 1/4 in Min Hole Size, 3/4 in Max Hole Size Grilles All ball bearing construction for

All ball bearing construction for longer tool life

Handle Length: 5-1/2

13 in L x 13 in W Grille

Height: 12

Positive locking latch allows for tool-free operation

IRWIN® Unibit® 10233 Self-Starting Step Drill Bit, #3 Drill, 9 -Hole Size, 1/4 in Min Hole Size, 3/4 in Max Hole Size Grilles All ball bearing construction forIRWIN Self Starting Step Drill Bit, #3 Drill, 9 Hole, 1 4 in Minimum Hole, 3 4 in Maximum Hole, Step Increments: 1 16 in, 1 8 in Step Length, 2 3 4 in Overall Length, Hex Shank, 3 8 in Shank Diameter, HSS, Finish: Bright, 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