Irwin 10239 Step Drill Bit, Self-Starting, 1/2', Size In=7/8 & 1-1/8 Pull-a-part Gatorback backing is soft and

Gatorback backing is soft and flexible

Dimeter: 3/8 in

Blue ABS handle

Precision ground hardened carbon steel 4

Irwin 10239 Step Drill Bit, Self-Starting, 1/2', Size In=7/8 & 1-1/8 Pull-a-part Gatorback backing is soft andHighlights: Size 7 8" & 1 1 8" Size KO=1 2 & 3 4 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 Patented single flute cutting edge gives the user a true round hole every time 3 faltted shank prevents slipping in drill chuck New SpeedPoint tip penetrates faster than previous Unibits and prevents walking Speed point tip