Item Type: Router Bit Material: Cemented Carbide SpecificationShank Diameter(Approx.)Blade Diameter(Approx.)Arc Diameter(Approx.) 8x19.058mm / 0.3in19.05mm / 0.8in3.17mm / 0.1in 8x22.28mm / 0.3in22.2mm / 0.9in4.76mm / 0.2in 8x25.48mm / 0.3in25.4mm / 1in6.35mm / 0.25in 8x28.68mm / 0.3in28.6mm / 1.1in7.96mm / 0.31in 8x31.748mm / 0.3in31.74mm / 1.2in9.52mm / 0.4in 8x38.18mm / 0.3in38.1mm / 1.5in12.7mm / 0.5in Function: Suitable for woodworkers to cut materials at a certain angle. Package List 6 x Router Bit 6 x Storage Box Keep it properly to prevent rust. 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.