The Carabiner Gauge is great for the sport and outdoor enthusiast as the carabiner and bottle opener functions come in handy on the go. Calibrated in PSI, kPa, and BAR. Batteries included. (4-140 PSI). Carded. 10/master. Counter Display. Tools Include: Bottle Opener, Glass Breaker, Flashlight, Digital Tire Gauge, Carabiner Clip