This is a wort chiller made from 25' of 3/8'' Stainless Steel tubing. 8' of vinyl tubing is attached to both the in and the out with a female garden hose fitting on the "water in" side. Use this to rapidly cool a wort after brewing. Cooling beer rapidly after boiling suppresses Dimethyl sulfide (DMS) production and results in a better tasting, clearer beer. This will cool the beer without exposing it to ice, which can contaminate the beer, or agitation with a recirculating plate chiller.