... . 100% full inspection 4. excellent surface treatment Item NO. types of pulleysMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, ... requirementsProcessing equipmentsCNC machining center, CNC lathe, grinding machine, automatic lathe machine, conventional lathe machine, milling machine, drilling machine ... Machine15 SetsRational Precision Inspection Instrument1 Sets types of pulleys