Our furniture caster used first-rate material PA PP PU , it has passed the ... Mounting: top plate,threaded stem,grip stem,bolt hole Caster Features:1.caster: swivel caster without brake2.PU: excellent anti-abrasion,floor protection ... to acid corrosion,bruise and dent5.suitable scope: medical trolley,hospital appliance,official appliance,shop,supermarket, etc. Workshop Special Test MachinesCertifications ...