VIAIRSuper Duty Onboard Air System Intended for inflation of up to 37 inch tires, can be used to actuate air bags, air horns and even small air tools. Includes two air compressors and all the parts needed for installation of you very own onboard air solution for tire maintenance and small pneumatic tools 150 PSI maximum working pressure and 33% duty cycle at 100 PSI Remote mount air filter assembly, sealed compressor Can inflate four tires up to 37 inches in diameter. Designed for uninterrupted use for up to an hour! (at 72 degrees ambient temperature)