Irwin Cobalt Alloy High Speed Steel Fractional Straight Shank Jobber Length Drill Bits 1/2-Inch Size:1/2" can be used in either

can be used in either right or left hand applications

HASSLE-FREE INSTALLATION: You will need Phillips screwdriver

multi-wrench

12" Mill Aluminum Turbine Ventilator

hose and synthetic tubing

Irwin Cobalt Alloy High Speed Steel Fractional Straight Shank Jobber Length Drill Bits 1/2-Inch Size:1/2" can be used in eitherConstructed of M 35 5 percent cobalt alloy high speed steel for super abrasive resistance in tough metals Heavy duty spiral flute design produces faster chip ejection Shorter cutting lips reduce torque for drilling in high tensile strength materials. 135 degree split point reduces feed pressure for easier penetration without work hardening