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

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.

Attributes:

Cutting Diam [Max] = 1/2 in, Cutting Diam [Min] = 1/16 in, Cutting Edge Material = HSS, Finish = Gold Oxide, Graduation(s) = 1/32 in, Includes = 15-piece set in metal index case includes drill bit sizes 1/16 in through 1/2 in in 1/32 in increments, Point Angle = 135 °, Quantity = 15 per set, Wt. = 2.13 lb. (1 SET = 1 SET)