Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- 7/8" hole size.
- KO size - 1/2".
- Shank size 3/8".
Easy-to-sharpen, non-skid tip - eliminates skidding and the need for center punching; the tip gives sure starts even on curved surfaces.- Single-fluted cutting edge - helps assure true round holes and allows greater control.
- Hardened steel for long life - constructed of industrial grade high speed molybdenum steel and heat treated to assure maximum durability.
- 3 Flatted shank - prevents slipping in drill chuck.
Irwin Unibit 10311 UN11 Fractional, Self-Starting Single Hole 7/8" Size 
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