Product Name: Lab chairs / lab stools with wheels / lab stools for school Model: ST-01 Material: Polyurethane / Eucalyptus wood Seat Size(w*d): Φ330mm Function: Up and down adjustment Height Adjustable Range: 400-540mm(distance from seat to ground) Base: Φ470mm / 20*40mm High-quality cold-rolled steel pipe stamping forming, electroplating Wheels: PA Nylon, Fixed and Moveable optional ESD Version: system resistance 10E4 ——10E9 Ω