Drill Bit - IRWIN Unibit Step Drill Bit - 1/2", 10310 Fibreglass Optimized finger hole

Optimized finger hole

6-Point design made with forged impact steel for durability in high torque

Item #: WW105

meant to take on more demanding applications

Drill Bit - IRWIN Unibit Step Drill Bit - 1/2", 10310 Fibreglass Optimized finger holeItem #: 10310 1 2" hole size Shank size 1 4" 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.