The 08J2044-3/4UNF fitting is designed to thread into the base of an AirDog® product on one side and has a 1/2 male quick connect on the other side. This item can be paired with our FQC12S and FQC1290 for a seamless connection. This is an ORB fitting utilizing an O-Ring seal for leak free installation! Does NOT fit AirDog® II-4G. Always be sure to verify fitment before purchasing.