Multi-functional Aluminum Alloy Router Table Insert PlateMulti functional insert plate with rings, suitable for make your own router table for high accuracy woodworking processing. Made by durable aluminum alloy for long life use. Convenient center hole bushing used to the router so it is centered in the bit hole. It is easy to operate, save effort and labor, and easy to manipulate and expand the use of the trimming machine at the same time. High precision CNC machining makes perfect quality.