Material: 100% plastic. With soft touch grips and bump ring. Click and connect technology: attaches and secures in seconds. Made from the highest quality DuPont delrin acetal. Delivers increased strength, resistance and flexibility. Leak proof: delivering water from tap to end and nothing in-between. Valve shuts off water when accessory is disconnected. Soft touch for extra comfort for easy connection/disconnection, even when wet. Designed to fit a 12.5mm and 15mm hoses. Ref: UTST5189