A can opener (in North American English and Australian English) or tin opener (in British and Commonwealth English) is a device used to open tin cans (metal cans).Here at Outdoor Shopping we offer the best manual hand operated military style GI P-51 and P-38 can openers just to name a few. The P-38 and P-51 are small can openers with a cutter hinged to the main body.The P-38 can opener is key chain-sized, about 1.5 inches (38 mm) long, and consists of a short metal blade that serves as a handle (and can also be used as a screwdriver), with a small, hinged metal tooth that folds out to pierce the can lid. A notch just under the hinge point keeps the opener hooked around the rim of the can as the device is "walked" around the rim to cut the lid out.A larger version, called P-51, is somewhat easier to operate. The P38 and P51 are cheaper to manufacture and are smaller and lighter to carry than most other can openers. The device can be easily attached to a key ring or dog tag chain using the small punched hole. Great for pocket, eating, everyday use, kitchen use, army, military, barbeques, luncheons, cook outs, tuna fish, beans, chili, canned fruits, potlucks, dinners, lunch, and breakfast.