There are a lot of good multi-purpose tools out there but I’m partial to Leatherman the original American made multi-purpose tool. I bought the Pulse because it has locking tools that makes them extra safe. There are number of current models with locking blades. My Leatherman is something I used every day for numerous purposes. It is kind of heavy for a knife but it is oh so versatile. I wouldn't consider going on a trip without it. Oh, and if you’re considering buying a cheap knock off, before you do, be sure to watch the movie 127 Hours.
FINAL EVALUATION: Indispensable! Heavy for a knife but so much more than a knife.
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* This is a discontinued model but there are lots of good ones to choose from