Performance Tools 3 Piece Step Drill Set - W9003

1/4in. hex shank 3 bit set replaces 17 individual drill bits
Titanium nitride coated high speed steel
For use with metal, wood and plastic
Starts on contact, no center punch needed
Automatically deburrs holes as you drill
6 step: 3/16, 1/4, 5/16, 3/8, 7/16, 1/2in.
9 step: 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4in.
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.