... :YH all size caster wheel1.size:50mm2.load capacity:60kg3.material:nylon4.color:black;brand:YH Our Advantages1) High quality 2) Competitive price3 ... kinds of Rubber caster, plastic caster, wood caster,pu caster,cast iron cater, nylon caster, ball caster, pneumatic caster ,rubber wheel ,plastic wheel ,pu wheel ,metal wheel ,pneumatic wheel.Warmly welcome customer ...