The product is a set of 2 Napa Balkamp 725-170 Hydraulic Coupler Quick Disconnect Adapters. Each adapter has a 1/2 inch diameter and features a female NPT (FIP/FNPT) plug end and a female NPT (FIP/FNPT) socket end. Made of metal, these quick couplers are manufactured in the United States. The product is designed for quick and easy hydraulic connections and is suitable for various industrial applications. Please note that the product may contain materials that are known to the state of California to cause Cancer and Reproductive Harm, as indicated by the California Prop 65 Warning.