A Style Keg Coupler 

Commonly referred to as the "German Slider", this A style keg coupler is used by many foreign breweries such as Hoegaarden, Paulaner, Spaten, and Warsteiner.

It is an easy-to-use coupler that slides on to the keg connection, made from 304 stainless steel and can be used for beer, wine, or ciders. For dispensing, one must simply push down to tap, and then pull up to untap.

It has a 3/8" outer diameter barb that fits an 5/16" inner diameter gas hose. It has a pressure relief valve that releases at 55-65 PSI.