... free, slient, safety, simple operation; 2)High performance, high durability, low maintenance; 3)No need lubricated oil. Product CharacteristicCristofoli medical oilless air ... life etc.The main feature1) Oil free design, clean air power supplier, suitable for your special ... operation;6) Maintenance-free and permanent lubrication system;7) Powerful air flow for high air consumption air tools;8) ...