Categorized by duty cycle, the OBA or On Board Air systems from ViAir provide a complete solution for all of your pneumatic needs. Great for providing power to air horns or filling tires from 33"-37" these onboard systems will help you get the job done with ease. ALL OBA compressor kits include air tanks with fittings, pressure switches, relays, electrical connecters and all other necessary hardware required to get the best sytem tailored to your needs up and running as quick as possible.