This little knife saved my hide once, when I had a flat tire during -20 (air temperature) weather. It cut through some frozen things that were blocking the jack so I could change out that tire myself. (When it's that cold, the towing companies & all roadside assistance is backed up for many hours. As it was, it took me about two, mostly because I had to get back in the car to warm up every couple of lug nuts loosened & retightened. That was a rough evening, but I made it through without any frostbite, & my wife had dinner ready for us just as I got home -- the contrast in experiences was amazing...).