Hard-anodized Aluminum Trimming Machine Engraving Device Flip Board with 3 Rings for DIY Woodworking

Features:
Made of fine quality 6061 hard-anodized aluminum material, strong and wear-resistant, not easy to rust.
Convenient center-hole bushing design which has 3 different bore sizes, 13mm, 30mm and 50mm.
Thread design, easy installation and easy disassembly, it can make accurately drilling and mounting any router easy.
There are two 60-0-60mm scales printed on the both side of panel, clear and not easy to wear, very conevnient.
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.
2in1 flip board design, suitable for both electric trimming machine and engraving machine, practical and easy to use.