This is a low profile coupler for applications where space is a problem. This high quality low profile keg coupler (keg tap) is compatible with all domestic brand kegs. This coupler works with all American "D" system sankey kegs. This coupler features a 55-psi pressure relief valve and a nickel-plated forged brass body. To tap a keg all you have to do is push down and turn to properly couple the keg.