Cemented Carbide Router Bits For Woodworking, Raised Panel Cabinet Door Making 1.[Universal Size Router Bit]1/4 inch shank panel cabinet door milling cutter head set. Make sliding rails and stepped cabinet door frames. 2.[MATERIAL] Premium C3 micro-grain tungsten carbide blades, solid hardened steel (45+Hardness) bodies with Anti-Kickback Design, for long-lasting performance, Silver induction brazing for maximum strength and durability, Body: Solid Hardened Steel.Build up with heat-resistant PTFE coating for accumulation can reduce resin accumulation, thereby achieving quick and easy cleaning. 3.[TOOLS AND FIXTURES] Fits most mortising JIGS, For both table mount and handheld ROUTER. 4.[APPLICABLE SCENE] Suitable for plywood, wooden door frames, wooden window frames, cabinets and boxes, solid wood, MDF, particleboard, etc.DO NOT cutting ferrous metal and non wood materials, such as: steel, iron, sand, etc. 5.[Feeding Speed]: 5-8M/Min; [Spindle Speed]:18000-19000RPM, please select the correct casing size and use low speed!