"This Ironton Pneumatic Shop Stool rolls, swivels and adjusts in height to provide excellent comfort and versatility for any job. A built-in tool tray keeps tools and parts close at hand. Caster Type Swivel, Wheel Size in. 2.5, Wheel Type Caster, Adjustable Yes, Material Steel, Height Range in. 15-19 1/2, Capacity lbs. 300, Dimensions W x H in. 15 1/4 x 19 5/8, Caster Size in. 2.5, Caster Material Plastic. Foam-padded seat Easy one-handed height adjustment Five nonmarring swivel casters for maneuverability Handy tool tray keeps tools and parts close at hand Adjusts in height from 15in. to 19.5in."