[Router Bits Size] Chamfer Router Bits With Radius Sizes: 1/8"(3.17Mm),3/16"(4.76Mm),1/4"(6.35Mm),5/16"(7.93Mm)And 6Mm Shank[Premium Material] Solid Hardened 45# Steel Shanks And C3 Micro-Grain Tungsten Carbide Cutters ,High-Tech Special Grinding Process And Advanced Spray Coating Technology With Anti-Kickback Design[Application ] The Roundover Edging Router Bits Are Used For Edging, These Bits Can Also Be Used To Create Miter Joints Of Various Angles. Great For Combined Plunge-Cutting And Pattern/Template Routing[Use Range] The Top Bearing Rounding Edge Forming Router Bit Set Is Used For Woods, Mdf, Laminate, Particleboard, Plywood Compact Panel, Acrylic, And Etc[ What You Get] 4 Pcs 6Mm Shank Versatile Round Over Edging Router Bit Set