John Guest Speedfit Hose Connector 15mm X 1/2" (Pack of 10)John Guest push fit Imperial to Metric Tube to Hose Connector is a push fit connector designed for adapting metric sized pipe or tubing to a hose type barbed connection. Fast and simple to install, John Guest push fit fittings create an instant push fit connection and leak tight seal without the need for tools, hot works or sealing agents. The unique collet locking design firmly and securely holds the pipe in place without deforming the pipe or