Task Stool Base Design 4 Legs Mobility Stationary Backrest Yes Base Color Black Built-In Tool Tray No Includes Footring Yes Maximum Seat Height 23 1/4 in Minimum Seat Height 18 5/8 in Overall Height 31 1/2 in Seat Adjustment Type Pneumatic Lever Seat Diameter Not Applicable Seat Shape Square Seat Width 15 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