Versatile Maintenance Repair Stool lets you work comfortably at low heights. Antibacterial, polyurethane seat material is resistant to water, oil, most chemicals and punctures. Ergonomic seat adjusts in height from 15.5" to 20.5". Built-in 16" attached storage tray allows quick, easy access to frequently used items like tools, writing utensils and more. Steel, five-legged base supports up to 300 lb. and moves smoothly on 3" rubber wheel casters.