... .11 years OEM manufacturer 4.excellent surface treatment Item NO. pulley wheelMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, ... , CNC lathe, grinding machine, automatic lathe machine, conventional lathe machine, milling machine, drilling machine, EDM, wire-cutting machine, CNC bending machine etc.Service projectTo provide ... great pleasure to be on service of you! pulley wheel