【Fixed Clamp and Set of 3 Plate for Router Table】: This router table lifting base is made of Aluminum Alloy body and stainless steel support bar, high strength, rust and corrosion resistance. It adopts 4 jaw clamping method, the clamp is strong and stable and not easy to remove. Provides a very stiff and durable support that can withstand the most difficult milling operations. With a set of 3 router tables for inserting boards, it can be used with Bakelite lifting tables for convenience. 【Wide Lifting Range】: Lifting height is up to 51MM, suitable for trimming and engraving machines with a motor diameter of 64 to mm.mo . It can be used with a router insert, which is suitable for making your own router table for precision woodworking ,easy to install and use. This can facilitate precise drilling and installation of any router. Made of high-quality aluminum alloy, durable and wear-resistant, not easy to corrode. 【Clearly Marked Precision Adjustment】: Comes with a crank that allows you to easily and precisely adjust the cutter height above the work table. Rotate the handle to raise or lower the carriage as needed to position the cutter in the desired position. Each complete turn of the adjustment handle drives the carriage and changes the height of the cutter, allowing you to precisely change the height of the drill bit. With clear scale and convenient carrying. 【Easy Adjustment】: The crank handle allows you to easily and precisely adjust the height of the cutter above the work table. Using the crank, you raise and lower the router lift, one simple turn - and you are ready for those heavy and long milling jobs. This is a great woodworking tool for both beginners and professionals. Router table insert size: 240 x 200 x 5 mm / 9.4 x 7.9 x 0.2 inch. 【Router Lifting Base Kit Included】: This Router Lifting System comes with 1 Router Lifting Base, 1 Bracket, 4 Screws and 1 Allen Wrench. 1 Router table plate, 1 support plate, 1 180 protractor. Application: Suitable for creating your own router worktable for precision woodworking. Suitable for 62*70mm or 45*56mm electric trimmers and engraving machines.