Description: 4 CNC ROUTER BIT: Shank: 8mm; Cut width: 2mm/3mm/4mm. CNC SURFACING ROUTER BIT: The sharp carbide tipped bit, solid hardened steel bodies with anti kickback design. VERSATILE WOODWORKING TOOlS: This professional T shape shank router bit for trimming and slotting/grooving. Great replacement bit tool for woodworking carpenter! USE RANGE for CNC ROUTER BIT: Suitable for solid woods, , laminate, particle board, plywood compact panel, acrylic and etc. Avoid cutting metal and non wood materials. APPLICATION: Use on CNC and other automatic routers as well as hand held and table mounted portable routers. Such as woodworking engraving machine, trimming machine. Specification: Material: Alloy and Carbon Steel  Size Chart: Shank Diammter: 8mm/3.15inch Shank Width:3.1cm/1.22inch Shank Height:5.36cm/2.11inch Cut width: 2mm/3mm/4mm( 0.08inch/0.12inch/0.16inch ) Package Includes: 1 Piece CNC Spoilboard Surfacing Router Bit Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!