This is a small money container for your key chain based on Muzz64's design https://www.thingiverse.com/thing:1358526. I want to make sure that I give Muzz64 full credit for this design because it's basically his 50mm container but a lot shorter. I printed both his 75mm and 50mm key chains but wanted something a little smaller so I made this. I wanted it to be as small as it could possibly be, so I made it to fit one rolled up dollar bill if you fold it in half and roll it up tightly. It's a pretty snug fit which is what I wanted.