The most understanding feature of this CPU stand cart is that it comes with two locking wheels and two caster wheels, thereby, improving enough mobility and stability. Due to the rolling function, you have access to the back of computer in an easy way. The CPU steel rolling stand is composed of fine quality steel so that it can carry the weight of 22 pounds and moreover, it can be used for a long-term period. The surface is coated with metal and both sides of the stand are adhered to foamed materials, so they can well protect the shell from being scratched. The four wheels have been upgraded to more of a flat and smooth way, which makes the wheel much easier to roll around. In addition, the CPU stand can be adjusted from 4.7 inches to 8.2 inches so as to fit most ATX computer mainframes on the market.