Description: Convenient center hole bushing to align the trimmer so that it is in the center of the drill hole. Easy and precise drilling and installation of any cutting machine. Multi-functional insert plate, suitable for make your own router table for high precision woodworking processing Woodworking accessories trimming plate, made by aluminium alloy, it is durable in use and not easy to rust It is easy to operate, save effort and labor, and easy to manipulate and expand the use of the trimming machine Build your own table-mounted router, so you can easily lift the router out of the table to change bits and safely operate Specification: Material: Aluminum Alloy,Plastic Color: as shown Size: approx.235x120x8mm/9.25x4.72x0.31 inch Package Includes: 1pcs Router Table Insert Plate 4pcs x Router Insert Rings 1 Set of Fixing Screws Note: Please allow 1-3mm error due to hand test. The color may be different for the different display.