Description: This Co2 regulator is specifically desinged for use in draft beer setups. This co2 regulator is equiped with 2 gauge display, one(o ~ 60 psi) for showing the working pressure in your draft beer setup, the other(0 ~ 3000 psi) one for showing the pressure in your tank. This regulator attachs to standard North American co2 gas tank with a male thread CGA-320(or W21.8). The knob on the regulator lets you adjust the working pressure without any addition tools. The hose barb is 5/16", fit 5/16"(8mm) ID gas line. Features: 1.Heavy Duty with Gaul Gauges.  This co2 regulator for draft beer setups is a heavy duty unit made with double gauges to accurately measure working pressure in the system and co2 tank pressure. 2.Professional Grade. This co2 regulator fits all standared co2 tanks with CGA-320(or W21.8) inlets. You can adjust the working pressure in your system via a control knob in the front. Shut off valve to prevent beer from backing up into the gas lines. Barb gas outlet fitting allows easy connection to many gas line types. 3.Easy installation. All you need to install this co2 pressure regulator is an adjustable wrench. Each unit is supplied with 2 spare washers. Always place a washer between the lock down nut and the tank to ensure a tight seal.  4.Versatile applications. Work with 15.5/5 gallon kegs, 1.75 gallon mini kegs, half barrels and quarter barrel units.