The "G" type coupler is sometimes known as a Bass keg coupler or tap. This is the style of coupler used on Bass, Boddington's, Anchor, Grolsch, Old Speckled Hen, Innis & Gunn and Watney's kegs, among others. Without this style of coupler, it may be hard to get beer out of kegs from those breweries! This coupler comes with the gas side connections, but does not come with the 3/16" liquid tailpiece, beer nut or neoprene washer needed for the liquid side.