. 13/16in 1-1/16in Step Reamer, 1/2in Steps Cuts and deburrs in one action.Step Reamers are designed for enlarging holes. Use in materials up to 2" thick.
3/8" three flat shank to suit 3 jaw chuck. 5/16in 9/16in Step Reamer, 1/2in Steps Cuts and deburrs in one action..Step Reamers are designed for enlarging holes.