Type: Driving wheel, loading wheel, training wheel. Material: Polyurethane Wheel Dia: 0~500mm Tread Width: 0~200mm Axle Hole Dia: 0~200mm Loading Capacity: 0~2000kgs Unit price: $5.00~$70.00 (exw) Export port: ningbo, shanghai. Payment term: TT, LC ect. We are manufacturer. If there are any questions please do not hesitate to contact me for the further details.