Adjustable overbed Laptop Table:Height: 23.6 to 35in.Rolling laptop desk at any angle you want. Mobile over bed desk:1 inch casters with brake,mobile laptop stand with wheels to go where you go Safety Rolling Laptop Cart:The laptop table bed tray with edge-stopper to avoid laptop sliding down Multifunctional:As bed side table,laptop rolling cart,rolling tray table,c table with wheels If you have any problems with the wheels or screws, pls feel free to contact us, we'll send you the replacement parts for free