This is modified shell for the GB Interceptor - you would only want this if you have a thicker PCB than recommended.
I accidentally built the PCB at 1.6mm (the default on JLCPCB) so had to create a custom shell to adjust for the extra thickness.
This shell also has a visible press point that sits over the flash button. So if you want to flash the GB Interceptor, you hold down where the ring is on the shell, and then plug it in, so your machine mounts the Raspberry Pico.
Although the shell snaps together, I've added screw hole and post for a one M2.5x4 screw with a flat head, and one heat-set insert with the measurement of M2.5x4x3.5 (that is a M2.5 thread with a length of 4mm and an outer diameter of 3.5mm) (based on the original GB Interceptor 3D print design).
Printed at 0.2mm, no supports on PLA.
The author remixed this model.