IRWIN Unibit1T Shank Step Drill Bit, Titanium Nitride Coated, 1/8" to 1/2" by 1/4" (15101) Air Tools Cable and 3 in

Cable and 3 in

DRIVE W/PIN 65R^It is used for Electrical & Heating

resulting in increased strength lifetime warranty

with brass hammers for safety | Copper tube size: 3/4-inch

IRWIN Unibit1T Shank Step Drill Bit, Titanium Nitride Coated, 1/8" to 1/2" by 1/4" (15101) Air Tools Cable and 3 inIdeal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates Single flute cutting edge for greater control through steps 3 faltted shank prevents slipping in drill chuck New speedpoint tip penetrates faster than previous unibits and prevents walkingAmazon. ca Product Description Step Drill Bit, Material HSS, Titanium Nitride Coated Finish, Number of Hole Sizes 13, Shank Size 1 4 In., Step