Item Type: Router Bit Material: Carbon steel main body + alloy cutter head Shank Diameter: 1/4in Package List 1 x Router Bit 1 x Storage Box 1. Avoid cutting ferrous metals and non wood material, such as steel, iron, sand, etc.2. Cannot be used for electric drills and drilling machines. 1Standard Size: The 45 router bit has a standard 1/4in shank, which is easy to install and operate, and it is not easy to fall off. 2Excellent Materials: The main body is made of carbon steel with alloy blades, which have good wear and impact resistance. 3Safe Operation: Anti backlash design makes operation safer, smooth rotation and incisive blade make cutting precise and easy. 4Applicable Boards: Used for wood, MDF, particleboard, plywood and other materials, very suitable for making drawers, cabinets, etc. 5CNC Tool: Specially designed for milling machine or desktop woodworking engraving machine, is a good CNC tool.