Air Locker Tank Fittings Kit For use with the VIAIR 2-1/2 gallon tank, when using air lockers;Kit includes one each 1/4 NPT(Male) to 1/8 BSP(Female) adapter, drain petcock, 1/4 compression fitting, 1/4 plug and 175 PSI rated safety valve VIAIR VIAIR Air Locker Tank Fittings Kit - 90006 90006 Air Line Fitting