The Pro Lift C-3100 is a 300 pound capacity pneumatic chair with a built-in three-drawer tool tray. It provides an adjustable height from 17-1/8 to 21-5/8 inches. With a maximum height of 21-5/8 inches, this pneumatic chair provides the most convenient heights to work on your garage needs. With durable steel and four heavy-duty swivel-casters, it is a reliable work-station chair that is able to move about in your work space. The convenient tool trays, two small trays and one large tray allow you to carry all the tools needed to get the job done.