[SIZE] Shank Diameter: 1/4"shank,The radius of R1/8", 3/16", 1/4",5/16", 3/8", 7/16", 1/2 [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. [TOOLS AND FIXTURES] Fits most mortising JIGS, For both table mount and handheld router. [APPLICABLE SCENE] mdf, solid wood, mdf, particle board, plywood, wooden door frames, wooden window frames, cabinets and boxes, etc.However, please avoid to cut ferrous metal and non wood materials, such as steel, iron and sand.perfect for woodworking, edging, trimming, grooving, veining wood projects. [High Quality]--Using high-grade YG6X original alloy. High abrasion resistance, high-precision grinding technology. Constructed using high quality materials, this router bit set will allow you to complete all your projects with confidence 1/2 shank Woodworking drill, USES the high quality YG6 carbide alloy and carrier of 45 steel, environmental protection coating process is bright and clean bright beautiful durable. Fits most mortising JIGS, For both table mount and handheld ROUTER.