Caster Castor, Caster Wheel, Industrial Caster manufacturer / supplier in China, offering 4/5/6/8/10/12" Extra Heavy Duty High Loading industrial Caster PU/Nylon/Solid Steel Twin Wheel Caster, 4" 5" 6" 8" Stainless Steel Heavy Duty PU/TPR/PA/Solid Steel Caster Wheels Industrial Anti-Rust Trolley Casters, 4"5"6"8" Heavy Duty Industrial Cast Iron PU Trolley Caster Wheels for Factory Hand Trolley and so on.