Straight off of the Discovery website, Q&A with Les:

Quote:
Q: I've watched several episodes of your show and I've noticed that you always carry the same "multi-tool." What type is it? Which items do you use that a good-sized, fold-up knife does not have? Which feature, besides the blade, is the most useful to you and why?

A: My favorite multi-tool is the Leatherman Wave. Other than the multi-tool, an ax is an amazing item to have. Don't forget to keep a sharpening file with it and learn how to sharpen — it makes a big difference. A bandana is always useful and, of course, a fool-proof way to start a fire is essential.

There is no question that having a multi-tool or fold-up knife with a saw blade is a fantastic advantage. That little saw blade makes fashioning tools and traps a lot easier.

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"I reject your reality and substitute my own..." - Adam Savage / Mythbusters