Airmaxxx 5 gallon aluminum air tank, black 580 dual air compressors & wiring kit. 2 – airmaxxx 580 air compressors, black. Dual air compressor wiring kit. 2 – 3/8″ leader hoses, 22″ long. 1 – airmaxxx black 5 gallon 9 port seamless aluminum air tank. 2 – 40 amp premium relay. 1 – 150psi (on) / 180psi (off) pressure switch. 2 – 3/8npt check valves.