This DeWalt desiccant air cleaner is an essential tool for maintaining the quality of compressed air used in various industrial applications. With a 3/8 inch port diameter, this unit is compatible with most air compressors. The desiccant material effectively removes moisture and other contaminants from the air supply. This air cleaner is made by DeWalt, a renowned brand in the industry. It is sold as a single unit and is manufactured in China. Please note that this product contains materials that are known to cause cancer and reproductive harm, as indicated by the California Prop 65 warning.