Features:  Plastics material, light weight, not easy to deformation, long service life, it is practical in use and not easy to rust.  Help trimming machine work, more safe and convenient to use.  Convenient center-hole bushing used to aligns the router so it is centered in the bit hole.  Make accurately drilling and mounting router easy.  It is easy to use and make the work be well done.  Convenient storage, not taking up too much space.    Specifications:  Material: plastics   Color: red, blue, gray (optional)  Item size: Approx. 232 * 119 * 10mm / 9.1 * 4.7 * 0.4in  Item weight: 175g / 6.2ounce  Package size: 250 * 130 * 30mm / 9.8 * 5.1 * 1.2in  Package weight: 255g / 9.0ounce    Packing List:  1 * Router Table Insert Plate  4 * Router Insert Rings (Red)  1 * Fixing Screws Set (Random Quantity)