This hose socket is designed to easily connect a hose to a water pump. One side screws into the pump, and the other end accommodates a hose, which requires a hose clamp for secure attachment. When selecting the correct hose socket, consider the screw thread size to match your pump's connection, ensure the screw connection type (male thread fits female thread), and choose the appropriate hose socket size to fit your hose's inner diameter. For instance, a 25mm hose socket is suitable for a hose with an inner diameter of approximately 25 mm. A hose clamp, sold separately, is needed to secure the hose to the socket.