Item Specifics: Brand: Shopsmith Type: Straight Router Bit Cutting Diameter: 5/16 in Shank Diameter: 1/2 in Material: High Speed Steel (HSS) Country/Region of Manufacture: United States Authentic, vintage Shopsmith 5/16" Straight Flute Router Bit. This high-speed steel (HSS) bit features a 1/2" shank designed to fit perfectly into your Shopsmith Mark V router chuck or collet attachment. The shank is clearly stamped with the official oval Shopsmith logo, "5/16", and "Made in U.S.A." Condition: Pre-owned / Vintage Cutting Edge: Clean, sharp, and free of any major nicks, chips, or rolls. Cosmetic Appearance: Shows normal signs of light shelf wear and minor age-related discoloration on the surface steel, but nothing that affects its functionality. Stamping remains crisp and legible. Please review the high-resolution listing photos carefully to confirm the exact physical condition before purchasing.