... surface treatment 5.make as per drawing Item NO. drive shaft couplingMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, bronze, solder ... coating, galvanized, electroplating, spraying, and painting and so on.PackingWooden box, or as per the customer’s requirementsProcessing equipmentsCNC machining center ... our great pleasure to be on service of you. drive shaft coupling