Feature: 1. [General Size] The thread is G5/8(BSP), suit for most American beer keg coupler, the 5/16in Barb suit for 5/16in ID beer tube,it is bigger than the general purpose models on the market and can support larger traffic. 2. [Good Material] Made of 304 high quality stainless steel which has high temperature ductility, low magnetic permeability, and low carbon content for greater resistance to corrosion. 3. [Professional Design] The nut make the installation easier and faster, the elongated barb part allows the pipe to be installed deeper, and provides clamps to make the pipe fully stable and not easy to fall off. 4. [Wide Application] Use for most American beer keg coupler, connect line to shanks and couplers. Also can use for other scenes which need the G5/8 thread to 5/16in barb fitting. 5. [Exquisite Workmanship] Excellent performance, it is very suitable for home brewing beer. This beer barrel coupler adapter is suitable for professional and family brewer. Specification: Item Type: Keg Coupler Material: Stainless Steel+Silicone Color: As shown in the picture Weight: Approx. 64g / 2.3oz . Package List: 2 x Wine Outlet1 x Air Inlet2 x Nut1 x Washer