This top of the line metal air filter, regulator and lubricator is built to last. The filter removes moisture and contaminants from your air line protecting your air tools and compressor from harmful elements. The regulator maintains pressure control. The Lubricator’s sensor provides a near constant oil/air ratio over a wide range of air flows. Your air tools and compressor will perform longer and more efficiently when protected by a quality air filter, regulator, lubricator.