Wheel diameter: 150/200mm
Wheel width: 31/41mm
Loading capacity: 220 to 300kg
Material: polyurethane
Bearing: single 6205
Color: black
Features: attractive appearance, wear resistance, large loading capacity and quietly running
Usages: furniture casters, carts, trolleys, medical appliances and machine equipment
Packing: each in polybag and carton
http://www.sitez.com/industrial-casters/