1、Stainless Steel Probe: The beer keg coupler is composed of brass body and stainless steel probe with sealing ring, which will not wear away over time and still retain the beer flavor after long term use.2、Work with CO2 Keg Regulator: The beer is fed through the keg connector and spear into the beer draft machine, where it is cooled by the draft machine and the mixing valve is opened to press the CO2 into the keg and release the beer.3、Wide Application: Widely used in bars, hotels, restaurants, dining rooms, homes, etc. Used to connect small kegs to dispense beer or drinks, suitable for most beer kegs and cola kegs.4、Easy Installation: Beer keg coupler fits for G5/8 thread, and fits for 3/8in outer diameter barb, fits 5/16in inner diameter hose. Easy to install and use.5、Great Compatibility: Keg coupler can be used with draft beer machine, beer tap, beer tower, wine spear, etc. Perfect for dispensing beer, wine, soda and other carbonated drinks.