Rolling adjustable height two-tier standing desk computer workstation delivers all the quality and features you need to enjoy a healthier, more productive workday. The two-level design places your keyboard, mouse, and monitors in a comfortable, ergonomic position. The tool adjustable height lets you raise and lower the desk in 1" increments, so you can find the perfect fit. Comes with a set of 3" lockable casters that roll smoothly on carpeted and hard floors. BIFMA is certified for safety and durability. Easy assembly. 5-year limited warranty against defects.