Round Stool, Base Design 5-Star, Mobility Mobile, Backrest No, Base Color Black, Built-In Tool Tray Yes, Includes Footring No, Maximum Seat Height 22 1/2 in, Minimum Seat Height 18 in, Overall Height 22 1/2 in, Seat Adjustment Type Pneumatic Lever, Seat Diameter 16 in, Seat Shape Round, Seat Width Not Applicable, ESD Conductive No, Assembled Unassembled