High Quality: Wood Router Bits The cutter body is made of high quality tungsten steel alloy, the knife handle is made of 45# steel, which has very high strength and anti-deformation ability. Efficient Cutting: Carbide router bits adopt double blade cutting design, you can easily cut the specific shape of slots on the wood. Compatibility: All wood router bits have a shank diameter of 8mm, suitable for electric wood milling, engraving machine, Taiwan machine, CNC, etc. Wide Range of Applications: Router Bit Suitable for soft and hard wood, particle board, MDF, plywood compact panel, laminate, acrylic, etc. Product Size: 8mm router bits include 3 different sizes, cutting diameter 60mm, cutting depth 16mm /16 mm /16 mm, cutter diameter 12.7 mm /19.05 mm /28.6 mm.