Easy to Install: This product comes with 4 installation screws, which simply fix the threaded support rod to the table. [ Wide application range ]: Suitable for workbenches, woodworking, electric wood milling, etc., can clamp edge trimming machines with a diameter of 64-66mm. In general, the more expensive lifting base can only lift up to 40 millimeters (1.57 inches). This product can be lifted up to 51 millimeters (2 inches), with an increase of 1 millimeter per revolution. [ High quality ]: The main body is made of hard Metal, CNC machining, with a and bright surface. The stainless steel support rod is rust proof and anti-corrosion, and has a long service life. Colour:black Material:Metal Package Contents: 1 set x Router Lift Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.