conveyor roller,material: aluminum, carbon steel, stainless, PVC,rubber diameter:19-500mm, finished: galvanized, rubber coated conveyor roller,material: aluminum, carbon steel, stainless, PVC,rubberdiameter:19-500mm,finished: galvanized, rubber coatedPVC rolleraluminum rollerstainless rollertaper rollersprocket rollerrubber coated roller conveyor roller