The bail wire is attached through a hole on either side of the top wired rim. This boiler holds 28 oz. liquid. Perfect if you are making a meal with another person. Soldiers improvised used tin cans after consuming the contents, by adding a wire handle and using these to cook with etc.
In the first photo you can see the Large Tin Can Boiler in front of our 4x4 Tin Cup for a size comparison. In the third photo it is next to the Small Tin can Boiler.
One great thing about the Tin Can Boilers is if you often portray both sides it is perfectly fine to use, in my opinion.