Cutter Card Ultra Thin Credit Card Knife. This ultra thin folding credit card knife is perfect and easily packable in a walled or another compact area. The surgical steel blade locks and is kid proof. This knife is also perfect for camping trips. Features tough polypro hinges and comes with a free case. This razor sharp tactical and utility knife is the same length, width and height as a credit card. Fold this knife from the card position to transform this item into the knife of your dreams. Cut through vehicle safety belts in an emergency or use in an outdoor adventure/survival situation.