P-38 Can Opener and P-51 Can Opener
Perhaps the best loved can openers of all time is the P-38 Can Opener and P-51 Can Opener. These are military issue can openers that are simple to use in any circumstance and they will positively open any can will ever need to be opened. Invented in World War 2, these can openers are military grade with a lifetime warranty and they just won't break, period. Simply push the hardened steel tooth through the can lid, line up the notch onto the can rim, and pump it in an up and down motion. It's so easy and effortless that virtually anyone can use it with ease. This is technically the best can opener ever made but its crude and simple design may put it out of place in a modern kitchen environment. However, it's perfect for use while camping, fishing, emergencies, or anywhere else when you need a can opener in an emergency.