Caster, Wheel, Airport Trolley manufacturer / supplier in China, offering 100mm PU Wheel Castor with Locking 400kgs High Load 4inch Single Brake Type Welding Steel Heavy Duty Industrial Caster, Stainless Steel Polyurethane Castors with Nylon Center, 200mm Nylon Bolt Hole Locking Castor for Hand Trolley and so on.