Genuine GI US Military Style Can Openers MIL-J-0837 P-38 or P-51 Lightweight Tool (10 Pack) Can Opener Fits On Key Chain Great Backpacking Tool The Army's greatest invention Small and light to carry around Faster than a normal can opener if the user has sufficient experience Also known as a John Wayne, so named because the actor was shown in a training film using it The can opener is a small folding blade used to open canned rations (such as K-rations or C-rations) amongst many other uses MIL-J-0837 Silver Colored GI Style US military can openers Options: Genuine GI US Military P-38 Tactical Can Opener (9937) Genuine GI US Military P-51 Tactical Can Opener (9938)