Irwin Cobalt Alloy High Speed Steel Fractional Straight Shank Jobber Length Drill Bits 3/8 in Dia x 3-1/8 in Size:3/8" x 3-1/8" Roughing-in work and nail embedded

Roughing-in work and nail embedded woodUse with materials 3/16" (5 mm) and thickerBi-metal construction for faster cutting and added durabilityPrecision set teeth for faster

wedge door stop

Fits over all substrates including siding

1 in a box

Irwin Cobalt Alloy High Speed Steel Fractional Straight Shank Jobber Length Drill Bits 3/8 in Dia x 3-1/8 in Size:3/8" x 3-1/8" Roughing-in work and nail embeddedConstructed 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