Black Widow BD Shop Seat Helps reduce stress on knees and back while working on cars, trucks, and more Five swiveling caster wheels for easy movement Swiveling, foam-padded seat with a pneumatic adjustable seat height from 17 to 22 15-1/2 deep bottom tray conveniently holds tools or parts Compact and easy to store with a 300 lb. weight capacity Helps reduce stress on knees and back while working on cars, trucks, and more Five swiveling caster wheels for easy movement Swiveling, foam-padded seat with a pneumatic adjustable seat height from 17 to 22 15-1/2 deep bottom tray conveniently holds tools or parts Compact and easy to store with a 300 lb. weight capacity