It is used to connect the outdoor machine and indoor machine of air conditioner,it not only can be quickly installed can be unloaded with pressure,the installation is very simple,no qualification required so that even clients are able to install it smoothly. This kind of quick connector consists of two parts,which can be called male joint fittings and female joint fittings, one part connect to outdoor machine and the other part connect to indoor machine,when installing, we link two parts together,and when unloading, we just need to take down two parts,it's very convenient.