My Review of the Credit Card Survival Knife made by Survival Life. This is one neat little knife. It folds up nicely right into your wallet; it’s only as thick as two credit cards and it unfolds into a knife in seconds!
Here are the details:
THICKNESS: 2.2 mm
WEIGHT: 13 grams
CUTTING EDGE: 65 mm
SAFETY: won’t come undone in your wallet; safety pin locks blade into place
Here is the link to get these for free (just pay shipping):