6Pcs Cleaning Bottom router bit with 8mm Shank, Size : 8*18; 8*20; 8*22 ;8*25; 8*30; 8*32. Solid Hardened Steel Bodies with Anti-Kickback Design, Build-up & 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 Package Including: 6 x Cleaning Bottom Router Bits