These small Swiss Arm Knives fit easily onto your keyring. With their small size and low weight, there is no reason to not carry one of these with you every day. They are also very affordable.

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The Classic model has a small 1.25 inch blade, nail file with screwdriver, scissors, tweezers, and toothpick (for a total of 7 functions).
There are 10 other models, all the way up to the Minichamp with 16 functions. Not bad for 1.6 ounces (45 grams). Pay a bit more for the Midnite Minichamp and you get an LED light too.

Shop for 58mm SAKs on Amazon.com using our affiliate link – http://amzn.to/2dWBz3Q