As professional steel ball manufacture, we supply you carbon steel ball, chrome steel ball and stainless steel ball, Place of OriginShandong, China (Mainland)Brand NameModel Number1/8" ... , 5/32", 3/16", 7/32", 1/4", 4mm, 5mm, 6mmapplicationbicyclematerialcarbon steel ... packing,plastic/tin box packing bicycle steel ball