Caster Castor, Caster Wheel, Industrial Caster manufacturer / supplier in China, offering 3"4"5"Medical Bed Caster Top Plate Twin Wheels Hospital PU Medical Casters Full-Plastic Medical Equipment Casters Type a, 6inch 8inch Outdoor Trash Can Steel Core Rubber Caster Industrial Castor Wheels, 3"Heavy Duty Casters Low Center of Gravity Nylon/Cast Iron PU Wheels Casters and so on.