This ergonomic workstation stand is an ultra-easy sit-stand solution designed with a spacious upper display surface and lower keyboard and mouse desk. It features spring-assisted lift mechanism that lets you switch easily between sitting and standing in just a few seconds. It also holds up to 33 pounds, while staying steady and solid at any height. Simple to start enjoying the health benefits of standing while you work. The gravity center kept on the same vertical line during the whole movement to avoid unexpected deviant Gas spring offers smooth and even support for any height you want 15 available options for height adjustment Wider adjustable range between the min and max height could fit more customers’ requirements Support groove on the surface for smart phone & tablet Advanced design avoids any danger of clamping injury Two knobs on each side offer easy height adjustment TygerClaw 35-in Black Workstation Stand