16 Different Sizes: There are 6pcs router bits in different specification, meeting your various working needs. 2Smooth Cutting: With anti backlash design, the router bit can smoothly cut into the material with little chip. 3High Accuracy: The router bit ensures high accuracy to cut out your design angle with high work efficiency. 4Cemented Carbide: Forged with premium cemented carbide material, the router bit has excellent durability. 5Storage Box: Each bit has a box, making both the storage and carrying much easier for your daily working.Item Type: Router BitMaterial: Cemented Carbide Specification Shank Diameter(Approx.) Blade Diameter(Approx.) Arc Diameter(Approx.) 8x19.05 8mm / 0.3in 19.05mm / 0.8in 3.17mm / 0.1in 8x22.2 8mm / 0.3in 22.2mm / 0.9in 4.76mm / 0.2in 8x25.4 8mm / 0.3in 25.4mm / 1in 6.35mm / 0.25in 8x28.6 8mm / 0.3in 28.6mm / 1.1in 7.96mm / 0.31in 8x31.74 8mm / 0.3in 31.74mm / 1.2in 9.52mm / 0.4in 8x38.1 8mm / 0.3in 38.1mm / 1.5in 12.7mm / 0.5in Function: Suitable for woodworkers to cut materials at a certain angle.6 x Router Bit6 x Storage BoxKeep it properly to prevent rust.