Viair 40047 400P-RV Automatic Portable Compressor Kit 12 VOLT - 150PSI Max Working Pressure, engine must be running during use. 2.3CFM Free Flow @ 0 PSI, Power Cord: 8' Air Hose: 60' 12-Volt Powered direct to the car battery with alligator clamps, Duty Cycle: 33 percent @ 100 PSI Max. Working Pressure: 150 PSI Max. Amp Draw: 30 Amps Tire Inflation Gun with 130 PSI Inline Gauge Comes with a tire inflation gun and gauge, build in pressure switch, air hose, RV accessories and a carrying case. Great for adjusting tire pressure on RVs and trailers.