Check the listing for details. BEVCO 3057 Round Stool,5-Star,Black,20.5"H 3LLW1. Condition: New. Listed at 332.52 USD. Round Stool, Base Design 5-Star, Mobility Mobile, Backrest No, Base Color Black, Built-In Tool Tray Yes, Includes Footring No, Maximum Seat Height 20 1/2 in, Minimum Seat Height 15 1/2 in, Overall Height 20 1/2 in, Seat Adjustment Type Pneumatic Lever, Seat Diameter 16 in, Seat Shape Round, Seat Width Not Applicable, ESD Conductive No, Assembled Unassembled The BEVCO(R) maintenance repair stool is ideal for use in machine shops, warehouses, and industrial applications where you have to bend or crouch down to complete your work. Includes a 16"-dia. plastic tool tray underneath the durable 14"-dia. polyurethane seat, pneumatic height adjustment, 360 Degrees swivel, and 5-legged steel base. Puncture-resistant seat is impervious to water, oil, and most chemicals. Seat is 2" thick and easy to.