VIAIR 300P Air Compressor Kit, 12V DC Portable Tire Inflator 2.3 CFM, Offroad 4

  

Easy to use, simply clamp the power leads to your car or truck battery, connect the tire chuck to the valve stem, and turn the unit on. The pressure can be checked using the 5-in-1 inflator/deflator inline tire pressure gauge once the compressor is turned off.