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Unibit is the most recognized brand for professionals in electrical, automotive and plumbing. Unibit fulfills the Irwin tradition of providing reliable, high-quality professional tools. Irwin Unibit has been the most innovative and trusted name in step drill bits since its invention in 1972. The new Irwin Unibit Cobalt is the latest addition to the step drill bit category. Made of cobalt high speed steel, this step drill bit will last longer in the toughest of materials. From stainless steel to aluminum or PVC pipe, the Unibit Cobalt is the most versatile and longest lasting step drill bit in the market.
Non-skid self-starting tip eliminates skidding and the need for center punching
Single-fluted cutting edge assures true round holes and allows greater control with less vibration.
Ideal for drilling holes in thin material us as mild steel, copper, brass, aluminum, Plexiglas, wood and laminates.
3 flatted shank prevents slipping in drill chuck
MADE in USA
INCLUDES:
- CARRY CASE
- NO. 1 - Replaces 13 hole sizes 1/8"-1/2"
- NO. 3 - Replaces 9 hole sizes 1/4"- 3/4"
- NO. 4 - Replaces 12 hole sizes 3/16" - 7/8"
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(02) 9756 3464
AIR TOOLS 
