Pneumatic 17" - 25" seat height range adjustment for low height applications. Two removable trays with seven compartments on each for organizing tools and parts. Soft cushion 1" diameter vinyl upholstered seat. Dual bar backrest for reliable lumbar support. Five industrial casters including two locking casters. Recommended Application Area(s): Assembly/Repair & Technical Task; Seat Color: Black; Back Color: Black; Color Family: Black.