Aluminum Alloy Router Table Insert Plate Trimming Machine Engraving Tool Flip Board with 4 Rings for Woodworking ,for Accurate Evaluation

Made of aluminum alloy material, strong and wear-resistant, not easy to rust, has a long service time. Convenient center-hole bushing design which has 4 different sizes for you to matching the router. This tool can make accurately drilling and mounting any router easy, you can install it by yourself. There are two scales printed on the both side of panel, clear to read and not easy to wear. Suitable for both electric trimming machine and engraving machine, practical and easy to use.