. The FIT12 kit contains all the air line fittings used in an HK1 or HK2 Problaster Horn Kit.Includes the following 1/4 NPT fittings: P/N 2121-120 PSI pressure switch, P/N 52145-145 PSI safety valve, P/N 52835-drain cock, 51414L elbow compression fitting. Kleinn HK1 and HK2 Fitting Kit - FIT12 Also includes P/N 318-BK momentary push button and a vial of Juice-1 Thread Sealant.
. Kleinn HK7 Fitting Kit - FIT7 Also includes P/N 318-BK momentary push button and a vial of Juice-1 Thread Sealant. The FIT7 kit contains all the air line fittings used in an HK7 Problaster Horn Kit.