PKR216P-8-6 1/2 X 3/8 Hex nipple WO122-8-6

VIA10005 Viair Heavy Duty On Board Air System 1) 2.5 Gallon Viair Air Tank (1) 400C model Viair Air Compressor (1) 1/4″ NPT Quick Connect Coupler (M) (1) Dash Panel Gauge with ON/OFF Switch (1) Pressure Switch with Relay (110 PSI on, 150 PSI off) (1) Reducer (1/8″ NPT F to 1/4″ NPT M) (1) 1/4″ NPT 175 PSI Safety Valve (1) 1/4″ Drain Cock (3) 1/4″ NPT Compression Fittings (1) 4-inch Strip of Continuous Grommet Material (1) 20ft. 12 Gauge Wire with Inline Fuse Holder