Irwin Cobalt Alloy High Speed Steel Fractional Straight Shank Jobber Length Drill Bits 1/2-Inch Size:1/2" an all-access slot design for

an all-access slot design for fast plug removal

Three cutting spurs for faster

Golden flo

install with screw nails & wood pegs (wood pegs sold separately)

Revolutionary

Irwin Cobalt Alloy High Speed Steel Fractional Straight Shank Jobber Length Drill Bits 1/2-Inch Size:1/2" an all-access slot design forConstructed 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