Task Stool Base Design 4 Legs Mobility Stationary Backrest Yes Base Color Gray Built-In Tool Tray No Includes Footring Yes Maximum Seat Height 32 1/4 in Minimum Seat Height 27 5/8 in Overall Height 40 1/4 in Seat Adjustment Type Pneumatic Lever Seat Diameter Not Applicable Seat Shape Square Seat Width 15 1/2 in ESD Conductive No Assembled Unassembled Footring Diameter 16 1/2 in Footring Shape Round For Floor Surface Hard Surfaces Includes Glides Yes Load Capacity 250 lb