... surface treatment 5.make as per drawing Item NO. types of motor couplingsMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, bronze ... acceptable for us.We are sincerely expecting to cooperate with you. Production Equipments: CNC Machining Center5 SetsMilling Machine7 SetsDrilling Machine4 SetsTapping ... ,it would be our great pleasure to be on service of you. types of motor couplings