I am the maker of these badges. They do fine with flat objects such as coins but not well with other keys. Mine lasted over a year in my pocket with coins and a lighter. I only sell them in pairs, there is another seller selling them in singles. Mine are custom moulded, so the chrome outlines sticks out from the paint and protects the paint from flat objects. The logos on the other ones are flat and printed on and can be easily scratched.