Pro Lift C-3001 Pneumatic Chair is the pneumatic chair that gives you the ability to adjust to the desired height to allow you to get work efficiently where you want in your work space. It gives you the ability to adjust the height from 15 to 20 inches. The range of motion is stable at any height underneath the durable reinforced steel and 5 swivel casters. There is the built - in tool tray to keep your tools close by when you move around the garage to provide you with the convenience to get the job done. In addition, the reinforced vinyl covered cushion provides you with the added comfort. - 15 to 20 Inches Adjustable Height - Convenient Tool Tray - 5 Heavy Duty 360 Degree Swivel Casters - Reinforced Vinyl Covered Cushion Provides Added Comfort Specifications - Capacity: 300 Lbs - Adjustable Height: 15 to 20 inch - Casters: 5 pcs - Item Weight: 13 Lbs Pro Lift C-3001 Pneumatic Chair is backed by 90 Days warranty from the date of the purchase.