Package includes: 6 x cleaning bottom router bits.6 x cleaning bottom router bit with 8 mm shank, size: 8 x 18; 8 x 20; 8 x 22; 8 x 25; 8 x 30; 8 x 32. Solid hardened steel bodysuits with anti-kickback design, build-up and heat resistant Teflon coating. C3 micro-grain tungsten carbide cutters, double-edged cutting design, excellent concentricity. Ideal woodworking tool for cutting all composition materials, plywoods, hardwoods, and softwoods. Color Name: 8 mm shaft. Features: C3 micro-grain tungsten carbide cutters. Solid hardened steel bodies with anti-kickback design. Build-up and heat resistant Teflon coating. Alloy blade with high-grade welding, stable quality, high efficiency.Cemented carbide constructed, great replacement for your old one.Specifications: Material: cemented carbide. Color: yellow. Shank diameter: 8 mm. Package includes: 6 x cleaning bottom router bits. Note: At the stretching, please wear good protective measurements, in case of wood chips splash damage eyes. Size for manual measurement, there may be a 0 to 5 mm error, belongs to the normal phenomenon.