The can opener is a small folding blade used to open canned rations (such as K-rations or C-rations) among many other uses. P38 Can Opener Directions & Instructions: Open Blade. Place opener on top of can and insert sharp edge into the can. Twist down to puncture slot in can top inside rim.Cut top by advancing opener with rocking motion. Tie string through hole opener to wash and sterilize with mess-gear if possible. When boiling water is unavailable, clean opener as thoroughly as possible and hold cutting blade over a match flame a few seconds immediately before use. The item "500 Pack Wholesale P-38 Can Openers Original P38 US Military Type John Wayne" is in sale since Thursday, July 11, 2019. This item is in the category "Home & Garden\Kitchen, Dining & Bar\Kitchen Tools & Gadgets\Can Openers (Manual)". The seller is "armyuniverse" and is located in Brooklyn, New York. This item can be shipped worldwide.