This is a case for ICStation's step-up module. The design features a hole in the side to allow easy access to the potentiometer that sets up the output voltage.
I'm currently working in a project that uses this module, and I designed a case for it in order to avoid any accidents that might arise if the exposed PCB makes contact with a conductive surface. I thought it would be a good idea to share it, as it might be useful for Makers who have this module.
Note: The two parts that form this case were designed to fit tightly, so it can be a bit hard to join them at first. I suggest waiting about 10 minutes after taking them out of the printer bed to give them enough time to cool down.