I needed some generic breakaway shims for a couple projects I'm working on and couldn't find any that suited my needs, so I quickly threw these together. They are also great to use the last of your filament, because if you run out in the middle of a print, you still have a shim. They are meant to break off to the size. Scale the print for any size you need. Great for installing windows, doors, or just leveling off that pesky table leg.