Fits 4.7' to 8.2' Wide PCs: Cart is adjustable from 4.7 to 8.2 allowing it to accommodate most ATX cases on the market. Note: Please check your PC case dimensions before purchasing to ensure that the width does not exceed 8.2' Easy Mobility: This cart features four caster wheels for smooth motion and convenient placement. Two of the wheels are lockable to keep the cart stationary when desired