IRWIN Unibit2T Shank Step Drill Bit, Titanium Nitrate Coated 3/16" to 1/2" by 1/4" Shank Step Drill Bit (15102)
Unibit 15102 Specifications:Description: 3/16" - 1/2"Hole Sizes: 3/8" Number of Holes: 6 steps Unibit 15102 Features:Ideal 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 flatted shank prevents slipping in drill chuck New SpeedPoint tip penetrates faster than previous Unibits and prevents walking