... on 1992,Supply for IKEA,SHARP,etc. The rubber castor information:Wheel: black hard rubber tyre + PP rimFork: high grade Q235 steel ... ,grip stem,bolt holeFeatures:1.caster: rigid caster, swivel caster2.rubber: anti-abrasion, resist compression3.finish: zinc-plated to resist bruise ... white zinc-plated.5.suitable scope: waste bin,factory workshop,industrial cart,shop handcart, etc. 2010 new rubber castor