Minimum Size : 1/4 In. Maximum Size : 1-3/8 In. Step Range : 1/8 In. Number of Holes : 10 Steps Shank Diameter : 3/8 In. 3-Flat Material : High Speed Steel, Black Oxide
Minimum Size : 3/16 In. Maximum Size : 7/8 In. Step Range : 1/16 In. Number of Holes : 12 Steps Shank Diameter : 3/8 In. Hex Material : High Speed Steel