1pc Woodworking Reversible Rail Cemented Carbide Router Bit 1-3/8"Diam * 1/4"Shank Description: This is a reversible rail router bit perfect for the use in engraving machine to cut rabbet, profile for tenon jointing. 1-3/8"diameter sharp cutting would improve working efficiency and product quality.   Features: and reversible rail router bit, which is a great woodworking tool. This router bit is made of cemented carbide for high hardness and long service life. Sharp cutting edge would improve working efficiency and product quality.  Usually use on electric engraving machines to cut rabbet, profile for tenon jointing. It can be used for finishing a wide range of materials including solid wood, MDF, chipboard, plywood, etc. Specifications: Material: Cemented carbide Shank Diameter: 6.35mm(1/4") Total Length: 3-3/16'' Cutting Diameter: 1-3/8'' Cutting Thickness: 10~35mm / 0.39'' * 1.37'' Quantity: 1 Package Includes: 1 x Router Bit  Note: Please allow 0~1 inch error due to manual measurement. Thanks for your understanding.