Value-Line Repair Stool brings comfort to difficult work spaces like machine shops and warehouse. All-around pneumatic adjustment allows you to easily alter seat height. Height settings from 18" to 22.5" ensure people of most heights can work comfortably. Store tools and other resources in the plastic storage tray attached to the base, measuring 15.62" in diameter. Sturdy, five-legged nylon base moves seamlessly on dual-wheeled carpet floor casters and supports up to 300 lb. Fabric upholstery meets CAL 117 standards for fire safety. Seat size is 16" in diameter.