IdeaNext Y0177 Digital Tire Pressure Gauge with Multi Emergency Tool-Safety Hammer, LED Light Suitable for most of vehicle tires, bike, motorcycle, truck and car, to save gas and keep tire wear with proper inflation Easy to use - with 4 modes of tire gauge pressure unit, psi, bar, kpa and kgf/cm2 Save energy - automatically shuts off after 29 seconds to save battery life Flashlight function - handy to use when you checking your tire pressure at night