No more bending, kneeling or crouching by using this pneumatic rolling mechanic stool!After a simple installation, this roller seat is ready to help you to repair cars or handle other projects. The 16"" - 22"" adjustable height and 330 lbs weight capacity make this roller seat suitable for most users. When you sit on it, this adjustable rolling stool brings you a cozier sitting feeling thanks to its soft padded seat. If you need to repair other tires, just move this rolling stool chair with 4 universal casters. And the seat is rotatable as well for extra convenience. Moreover, the large tool tray with 4 removable chassis keeps the needed tools close to hand. And one of the chassis is magnetic to better store the small tools.