Hex shank 3 bit set replaces 17 individual drill bits. Titanium nitride coated high speed steel. Automatically deburrs holes as you drill. 13 step: 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2in.
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