Switch gears while you work! Crank control for easy height adjustment: Crank to the right / left to adjust the height of your table. It's that simple! Switches from sitting to standing position in just a few seconds. With high quality gear and spindle drive systems, movements up and down are extremely smooth! Universal size:Fits most desks in any office or cube Just place the desk on top of a table / desk / etc. and you're all set! Enjoy the freedom of sitting or standing while you work! Sturdy even when at standing height! Make standing a part of your work day! Standing vs. Sitting Standing = Healthy:Five or more hours of sedentary sitting, is the health equivalent of smoking a pack and a quarter of cigarettes! Recent Studies Studies have shown that our bodies can benefit from simply standing up, contracting muscles, and moving. Think of standing as pushing a reset button on your body. If you press the reset button before the timer hits 20 minutes, you’ll avoid any of the negative side effects of a sedentary job. Specifications: Model: U-101 Manual Operation Length: 47.2" (120cm) Width 23.6" (60cm) Extension: 13.77" (35cm) Revolutions to reach max extension: 45 Weight: 35.2 lbs (16kg) Maximum Load: 44 lbs (20kg) Instructions: Turn the crank clockwise until you have reached your desired height. If a decrease in heigh is desired, turn the crank counter-clockwise.