The sit-stand desk uses a mechanical spring to adjust the height easily and can last for many years as it is made of high-grade cold-rolled steel and has a strong X-frame skeleton. Compared to the sit-stand desk with mechanical Spring, this is lightweight, strong, and most cost-effective. It takes up little space and is designed for safety, with non-slip pads, rounded corners, and a, safety lock. Required no assembly just buy and use! It is perfect for both home and office use. Symple Stuff