Slime Digital Tire Gauge with Lighted Tip allows you to maintain the proper pressure in your vehicle's tires, minimizing tread wear, increasing gas mileage and improving handling. This digital gauge has an easy-to-read LED display, an automatic shut off, a reset button, and low to high PSI, KPA and BAR. Special features include an ergonomic rubberized grip and front and back lights for nighttime use.