Connection piece quick coupling made of plastic for a connection of 15mm heating hose to ½" female thread BSPT. Verba uses this straight quick connector floor heating elements to connect the oxygen sealed hose to ½" thread. These couplings are of the highest quality available for stables. The couplings consist for the most part of plastic that cannot be damaged by the stable climate. As a result, no water leaks or air leaks occur over time. The quick couplings are very easy and quick to install.