With this 2-Leg to 3-Leg Conversion Kit you can say goodbye to desk wobble for good. You can turn your adjustable height desk into one that's stable enough to secure all of your desktop stuff. You have options for transforming your rectangular desk into an L-shaped workstation with the quick addition of a leg that elevates and uplifts your workstation. The 2-Leg to 3-Leg Conversion Kit comes with an additional lifting column or leg, mounting bracket, connecting wire, control box, and optional switch so you can use your current height adjustable base without having to purchase a new one. Comes in black, gray or white.