Double fluted design for sharp and long lasting cutting. Applied to routing, inlaying, mortising in wood and other soft materials. Add new creation to cabinet doors, drawer fronts, and fluted mill work, or use these bits to engrave wood signs. Provides cleaning and sharp cutting action, cuts all composition materials, plywood, hard wood, and soft wood. Used on hand held and table mounted portable routers, great router bit replacement for woodworking carpenters. Specification: Material: Alloy Shank Dia: 1/2in / 12.7mm Cutting Dia: 5/16in / 7.96mm Cutter Head: 20mm / 0.79in Total Length: 62mm / 2.44in Shank Dia: 1/2in / 12.7mm Cutting Dia: 3/8in / 9.52mm Cutter Head: 20mm / 0.79in Total Length: 65mm / 2.56in Shank Dia: 1/2in / 12.7mm Cutting Dia: 1/2in / 12.7mm Cutter Head: 20mm / 0.79in Total Length: 60mm / 2.36in Shank Dia: 1/2in / 12.7mm Cutting Dia: 5/8in / 15.9mm Cutter Head: 21mm / 0.83in Total Length: 56mm / 2.2in Shank Dia: 1/2in / 12.7mm Cutting Dia: 3/4in / 19.05mm Cutter Head: 20mm / 0.79in Total Length: 57mm / 2.24in Shank Dia: 1/2in / 12.7mm Cutting Dia: 7/8in / 22.2mm Cutter Head: 21mm / 0.83in Total Length: 60mm / 2.36in Package Includes: 1x Router Bit