77P is a compact yet powerful portable compressor capable of inflating up to 225/60/R18 tyres by simply plugging into your cigarette lighter power port, connecting to a valve stem and turning the unit on. tyre pressure can be monitored using the Illuminated Pressure Display on top of the unit. This compressor also comes equipped with an LED Work Light, and Deluxe Carry Bag with bright orange lining for enhanced visibility.