Cobalt High Speed Steel Drill Bit Sets, 1/16 in - 1/2 in Cut Dia., 15 per set

Features: Constructed of M-42 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