Material: Tungsten carbide, superior abrasion resistance; Steel bits that meet the high demands of woodworking and hardware. Size: 6mm shank; Cutting diameter: 16mm/22mm/25mm/32mm. Universal: The box bit is designed for reeding, fluting, panel making and round nose groove. Feature: Use on CNC and other automatic routers as well as handheld and table-mounted portable routers; it is particularly effective for flat surfaces. This bit allows you to cut dovetail joints matching the precision and accuracy of drawers and furniture. Note: The data are all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.