Woodruff Key Seat Cutter, type: Staggered Teeth, Nominal Diameter: 1-3/8", Width of Face: 1/4", O.A.L.: 2-1/4", Shank Diameter: 1/2", American Standard #811. 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