Tired of inflation and the rising cost of stainless kegs? Welcome to the world of Oxebar Kegging, where a new proprietary Oxebar Mono blend of PET plastic has made PET plastic suitable for long term beer storage and dispensing, at a fraction of the cost of stainless. The Oxebar system is based on 38mm PICO 1881 threading to fit 8 Liter Oxebar kegs. This starter set includes two 2.1 gallon Oxebar Kegs with two sealing caps and one Oxebar Tapping Head. Each keg is. 6.1" wide, 21" tall. Maximum pressure 58 PSI. Note that you will need a gas regulator with a gas ball lock outlet as well as a ball lock beer tap to complete this system and dispense beer.