P38 Can Opener Have you ever needed a fool proof way to open a can? Miss the old days of having a can opener on your dog tags? Do you need a P38 Can Opener? The P38 Can Opener is perhaps the US Army's greatest invention! Invented in 1942 for use with then issued for the K-Rations and later C-Rations, issued during WWII, Korean War and Vietnam up until the 1980's "Old School is cool" Can Opener that can be attached to key chains or dogs tags. The notch on the body hooks into the rim of the can, and then the blade is "walked" around the rim to open the can. Traditionally it would take 38 cuts to open a Can. Simple, compact and can be used by Left or Right handed Folks. Available Singly or in packs of 5 or 10. Hygienic: No more opening Cans with rusty and worn bayonets or field knives.