(AHN-63221) 21 Pc. Cobalt Alloy Steel High Speed Steel Drill Bit Set

• 21-piece set in metal index case includes drill bit sizes 1/16” through 3/8” in 1/64” increments • Constructed of M-42 8 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