Features: Adjustable Computer Tower Stand Adjustable width and lengthfits a large range of CPUs; adjusts from 8 to 12 width, 15.7" to 19" length. Reduce CPU Temps The PC cart can elevate pc off the floor to support cool airflow into the bottom of the case, reduce CPU and GPU temps. 4 Locking Wheels This pc tower stand has four casters, designed to improve mobility and stability, you can easily move the computer. Simple Assembly Step 1 Insert the wheels into the bottom hole, and ensure the two lockable wheels should be mounted on the front end of the same side. Step 2 Turn on the inner adjustment switch. then adjust the width according to the size of the ATX case. Step 3 Secure the switch and comptele the installation.