... -10,000 kilograms items short movement2,add heavy-duty caster wheel , strong and durable.3,and heavy-duty caster wheel choose pressure bearing, roller ... plastics or galvanized.5,you can select different materials (nylon, pu, cast iron, rubber) caster wheel.6,According to customers' special ... swivel caster&Scaffolding swivel caster 4)nylon swivel caster 5)pu swivel caster 6)rubber swivel caster