... sale service SpecificationAccording to your requirement.MaterialStainless steel, brass, copper, aluminum, carbon steel, alloy steel etc.Surface TreatmentZn-plating, Ni-plating, ... disposing, hot-dip galvanizing, black oxide coating, painting, powdering, color zinc-plated, blue black zinc-plated, rust preventive oil, ... more ,please be free to contact with us : stainless steel shaft and metal bar roller