[] keg coupler features a chrome-plated brass body and stainless steel probe as well as a more sturdy lever handle, which meet ergonomic standard. The special construction will ensure wear reduction and retain beer flavor after long periods use..[Satisfactory Sealing]The pressure relief valve of keg tap coupler will automatically open on about 55 psi, allows excessive pressure gas to escape before it enters the keg. Silicone check valves and beer line washers between the coupler and the barb tailpiece give a great sealing performance to prevent leaking and backflow..[Complete Coupler Kit]Equipped with standard G 5/8 thread for ball lock fitting. This S coupler has come with all necessary parts including beer & gas barb tailpieces to fit I.D 5/16' draft beer line gas brewing tubing. 2 tailpiece set & hose clamps are provided so that you haven't need to buy them separately..[High Compatibility] This keg coupler is compatible with all European S system Sankey kegs so that can be perfect vessel for various kinds of carbonated drinks. It can also meet the need of heavy use in high-demand business environments such as bars, restaurants, and breweries..[One Year Warranty]One year's quality assurance. Professional customer team will solve all your problems and provide help within 12 hours. Message us via Amazon for full support and .