Name: Double bearing spiral trimmer.Material: YG6 alloy cutter head, 45# carbon steel cutter body, surface sprayed.Usage: used for wood cutting.Engraving bit: the cutting bit: router bit for wood is easy to use and can be used with a variety of different routers, a great choice for professional woodworkers and hobbyists. Trimming cutter: This router bit features double bearings that allow for cutting and setting Precisely shaped wood. Router Bit: Woodworking router bit, easy to replace, elegant appearance and comfortable to operate. Router Attachment Kit: Double bearing router bit is versatile, can be used for a variety of woodworking projects .Woodworking Tool: The carbide router bit can produce clean and precise cuts, which can help reduce the amount of sanding and finishing needed. Note: The data are all measured manually, 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.