Irwin Unibit Step Drill Set, HSS #1-#3

Single-flute cutting edge for greater control through steps. Three flatted shank prevents slipping in drill chuck. Non-skid self-starting tip eliminates skidding and the need for center punching.

Attributes:

Applicable Materials = Stainless Steel; Copper; Brass; Aluminum; Plastic; Laminates, Cutting Edge Material = HSS, Includes = (1) Step Drill Bit 1/8 in to 1/2 in; (1) Step Drill Bit 3/16 in to 1/2 in; (1) Step Drill Bit 1/4 in to 3/4 in, Quantity = 3 per set, Shank Diam [Nom] = 1/4 in; 3/8 in, Type = Step Drill Set, Wt. = 0.3 lb. (1 SET = 1 SET)