Constructed of M-42 8% 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 when drilling in high tensile strength materials
135 degree split point begins drilling immediately, minimizing bit walk
5/16", Cobalt Bit, 135 Degree Split Point To Minimize Walk, 8% Cobalt For Higher Heat & Abrasion Resistance, Heavy Duty Web Construction For Strength & Durability, For Tough Metal Drilling, Including Heavy Duty Abrasive, Alloy Metal Drilling On Hardened Steel, Cast Iron & Stainless Steel.