5" PVC CASTER Large comfortable seat for stress free sitting. Easy to clean vinyl upholstery. Large 5 casters roll effortlessly over most surfaces and small objects on shop floor. Height adjustable. Large easy to reach tool shelf. Monster tractor mechanic's seat has five 5 high-performance solid rubber swivel casters with axle bearings that take you anywhere, over any surface. Low-back cushioned seat offers extended comfort. Easy lever action raises and lowers seat up to a 5 rise. Floor to seat is 20-3/4 in lowest position. 19 diameter tray holds tools and parts. 350-lb. capacity seat works great around gravel, cords, hoses, etc. Some assembly required. 1-99500 Prop65 information pending - Vinyl chloride