Walter Surface Technologies Multi-Step Drill Bit Set, 3 No. of Pieces, High Speed Steel (01W951)

Multi-Step Drill Bit SetSpecial AICrN coating provides additional toughness and wear-resistance to prolong tooling life2 wide, cylindrical flutes eliminate chip build-up for faster drilling and produce holes with minimum vibration or distortionEach shank has three flats for easy mountingSet includes (1) 13 step from 1/8" to 1/2", (1) 12 step from 3/16" to 7/8", and (1) 10 step from 1/4" to 1-3/8"Perfect for cutting or enlarging holes in sheet materialSpecial bronze SST heat and surface treatment