The Brookstone Automotive Tire Inflator Air Compressor is a portable and compact device designed for inflating car tires with a maximum working pressure of 300 psi. Powered by a 12V corded electric source, this black air compressor comes with a pressure gauge, pressure safety valve, and is lubrication-free. With a tank capacity of 1 gallon and an aluminum tank material, this automotive tire inflator from Brookstone is a reliable and efficient tool for maintaining proper tire pressure for optimal performance and safety on the road. New in box.