Caster, Industrial Casters, Swivel Casters manufacturer / supplier in China, offering 125mm150mmheavy Duty PU Double Springs Swivel Locking Shockproof Caster, Heavy Duty 5" 6′ ′ Iron Core PU Double Springs Swivel Shockproof Caster Wheel, Heavy Duty Cast Iron Core PU Double Spring Castor Wheels for Materials Handling Equipment and so on.