This is a simple metal faucet adapter that works on most faucets. It can adapt from the standard sized fitting to a garden hose style fitting, and is most often used with the Jet Carboy and bottle washer, as well as copper immersion chillers that have a garden hose adapter. Simply hook this up to the sink, then hook up your device and start going! A lot easier and much more convenient than having to work around your outdoor garden spigot!