​Materials:YG6X ​Shank: 6.35mm (1/4'') ​ ​1. High-quality carbide inserts bring you a smoother experience, and the strong wear resistance makes it to withstand the test of time in heavy-duty use. ​ ​2. our router bit provides higher stability and less vibration. The RPM≦18000. Pushing slowly can help you get a smoother cut. ​ ​3. This flush trim router bit is suitable for wood, MDF, particleboard, plywood, compact panels, acrylic. Do not cut metal and non-wood materials such as: steel, iron, sand, etc. ​ ​4. For CNC and other automatic routers as well as handheld and table portable routers. Such as woodworking engraving machines, edge trimming machines. ​ ​5. If you have any questions about the product, please contact us.