The cap enables a quick, secure seal to a male end coupling without having to screw on and off an attachment. It has an internal sealing ring that is protected from abrasion which ensures long-lasting sealing protection for a water inlet. Made from stainless steel for durability and then electropolished for a chrome-like finish that gives it a decorative appeal. Visit us at https://easyflowflushing.com/product/quick-connect-cap/