medical castor wheelsWheel Material:PA,PP,TPRSize:4" x 32mm ; 5" x 32mmLoading Capacity:70kg-80kgBearing Type:Plain BearingType:Threaded Stem,Threaded Stem With Plastic Dual-Brake,Threaded Stem With Metal Dual-BrakeWidely used as Hospital furniture casters,Hospital bed caster.Medical cart castors,Medical Device Casters