A proper multi-tool needs a lot of tools, and that's what Harbor Freight's Gordon 20-in-1 tool promises at a fraction of the price of name-brand ones.

If you have a Leatherman Multi-Tool, you have access to a number of surprising tools. Here's how to make the most use out of your Leatherman's file.

Understandably, this device isn't suitable for every EDC multi-tool. But it's so handy that it should definitely be more common.