With a thick cushion, integrated easy-to-reach storage tray and a 15 in. to 20 in. lift range, the pneumatic adjustable roller seat is as practical as it is comfortable. Smooth rolling 2-1/2 in. diameter casters and a 360° swivel seat with one-hand height adjustment make it easy to get the right position for almost any job. The pneumatic roller seat is a must-have for any garage or shop.