This portable air compressor has a small electric motor that compresses the air in a small attached cylinder tank. It can be plugged into a 12V car system for on-the-go repairs or inflation. It's ideal for car and bicycle tires, sports balls, airbeds and inflatable toys, etc. Because it can be powered in your vehicle, it is incredibly versatile and a lifesaver in some instances. Portable and versatile. Easy to use - just plug into your car for power, slip universal adapter over tire valve and you are ready to inflate. Ideal for car and bicycle tires, sports balls, airbeds and inflatable toys. Forget about punctures on your next long drive with the all new easy to use compact Tyre Inflator. This compact easy to use tyre inflator can be used for any light weight vehicle. With this tyre inflator you would no longer need to worry about tyre punctures.