IRWIN® Unibit® 10239 Self-Starting Step Drill Bit, #9 Drill, 2 -Hole Size, 7/8 in Min Hole Size, 1-1/8 in Max Hole Size Registers BOSCH exclusive CoolPack™ 2 technology

BOSCH exclusive CoolPack™ 2 technology cools the battery and helps provide longer battery lifetime compared to non-CoolPack™ BOSCH 18 V batteries

Width: 1-1/4

68 to 72 deg F

875 in W x 3

Free float design on-the pivot bolt provides longer life

IRWIN® Unibit® 10239 Self-Starting Step Drill Bit, #9 Drill, 2 -Hole Size, 7/8 in Min Hole Size, 1-1/8 in Max Hole Size Registers BOSCH exclusive CoolPack™ 2 technologyIRWIN Self Starting Step Drill Bit, #9 Drill, 2 Hole, 7 8 in Minimum Hole, 1 1 8 in Maximum Hole, Step Increments: 1 2 in, 3 4 in, 2 7 8 in Overall Length, Hex 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 Hex shank prevents slipping in drill chuck New SpeedPoint tip penetrates faster than