Hebei ruiao machine tool accessories producing co.,ltd Operating pieces : wheel handle Material : bakelite,aluminium,plastics Types: (1)double-spoked wheel handle with folded handle (2)fringe of the wheel hand wheels (3)inner corrugation hand wheels (4)back corrugation hand wheels (5)milling machine hand wheels advantages : they are used for the mordern and traditional machienry extensively and they are more helpful for us to operate machinery. Diameter including: 100mm/125mm/160mm/200mm/250mm