MEGA DIGITAL TYRE GUAGE 92020 Built-in LED light offers useful illumination when working in dim or dark lighting. Check tire pressure and anticipate unexpected problems. With the changing seasons and temperatures, it is important to keep your tire pressure up to date. Too low a pressure can be dangerous. If at any time a puncture occurs, use our tyre inflator to inflate the tyre fast. Segmented movement for long-lasting use . The motor design allows the air compressor to dissipate heat and reduce vibration for comfort while in use.