Made by Perlich. Has two gauges- one to read the gas pressure in the beer line, and one to read the pressure in the CO2 tank. Fitted with a 5/8" nipple to attach the air line, with a built in check valve and pressure release valve. The back check valve will prevent liquid from getting inside the regulator where it could cause serious damage. Comes with basic instructions. Adjust the CO2 pressure to your kegs from 0- 60 PSI with the small adjustment screw on the front of the regulator. Actual unit may vary from photo but will have all of the features advertised here.