The NEW DeVilbiss High Output Air Adjusting Paint Spray Gun Valve with Gauge HAV-501 is a single item spray gun valve made by the reputable brand DeVilbiss in the United States. It features a 1/4in. air inlet size and includes accessories such as a valve and gauge. This product is not a custom bundle and is not a modified item, making it a reliable and high-quality option for automotive tools and supplies.