Woodruff Key Seat Cutter, type: Straight Teeth, Nominal Diameter: 1/2", Width of Face: 1/8", O.A.L.: 2-1/8", Shank Diameter: 1/2", American Standard #404. 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