Jackie Cardsharp Credit Card Sized Folding Knife (Black Blade)
Blade edge is protected when stored in wallet or kit bag. Protective hilt appears when open This is a foldable pocket knife that transforms from a credit card into a razor sharp pocket knife with a couple simple folds. once locked into place, it is as sturdy as any pocket knife, and when done, it easily lays flat and blends in with the other credit cards in your wallet.