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Drill Set Multi-Step Oem Walter

Special AICrN coating provides additional toughness and wear-resistance to prolong tooling life 2 wide, cylindrical flutes eliminate chip build-up for faster drilling and produce holes with minimum vibration or distortion Each shank has three flats for easy mounting Set 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 material Special bronze SST heat and surface treatment