DescriptionSpecificationsDescription5/16" Radius, 5/8" Circle Diam, 1-3/4" Cutter Diam, Shank Connection, Convex Radius Cutter 3/4" Shank Diam, 4" OAL, High Speed Steel, TiN Finish, Profile Ground, 10 Teeth, Weldon FlatSpecificationsManufacturer NameWhitney Tool Co.