Woodruff Key Seat Cutter, type: Straight Teeth, Nominal Diameter: 1-3/8", Width of Face: 5/16", O.A.L.: 2-5/16", Shank Diameter: 1/2", American Standard #1011. For cutting Standard and woodruff keyways in steel and other ferrous materials.
*Photos are for general reference of product. The photos are not specific to each size