DURABLE CUTTING HEAD: Cutter head is made of YG6 alloy.Incisive cutting edges increase work efficiency and product quality.It also has high wear resistance and long service life SUPERIOR PEARL : Rounded bead tips create clean rounded profile edges with an added bead above the rounded profile, making work more efficient PREMIUM QUALITY: Carbide cutters and steel shank. Premium Micro-grain Carbide Cutters for Long Lasting Performance PACKAGE INCLUDES: Router bit set1, rounded edges, above shank,Note: Avoid cutting ferrous metal and materials other than wood, such as steel, iron MANY USES: Suitable for a wide range of materials, including MDF, solid wood, particle board, plywood, wooden door frames, wooden window frames, cabinets and boxes Specification: Color: Yellow Stem Diameter: 6mm Quantity: 4Pc Material: Tungsten Carbide Blade Size: Blade Radius:3.17mm, 4.76mm, 6.35mm, 7.96mm (1/8", 3/16", 1/4", 5/16") Features: Highly wear-resistant, durable. Clean and clean the surface without problems. Clean cut, rotation soft, fast operation. Quantity delivered: 4 pieces