Quick & Accurate
Quickly enlarge holes in material up to 1/2" thick. Each step reamer has five hole enlargement steps, in 1/16" increments, for accurate hole enlargement.Weldon Shank
3/4" weldon shank provides direct attachment to magnetic base drills.Superior Hole Quality
The step reamer accurately enlarges holes while the chamfer on the next step deburrs the edge of the hole.Black Oxide Finish
Provides added lubricity to quickly extract cut material, providing longer life and faster hole enlargement.