Description
Brand Name: irwin | Material: cobalt-steel | Number in Package: 1-pc. | Overall Length: 4-1/2-in. | Packaging Type: bulk | Shank Type: straight-shank | Flute Length: 3-3/16-in. | Drill Size: 5/16-in. Cobalt high speed steel fractional straight shank | 5/16 in. drill bit | Constructed of M-35, 5 percent cobalt 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
