Use of supplied safety clip guarantees the fittings are properly connected because the safety pin will not go through the holes in mating fittings until couplings are locked in place. Only one Air King safety clip or wire type retainer is required for each Air King universal coupling Air King is for air and water service only Air King meets pressure requirements as specified in A-A-59553 commercial item description superseding Mil Spec.WWC-633D Safety clip included Supplied with rubber washer, part # AWR4
