This is a little cap to fit in the hole left in the iRig Pre after it is modded for audio output through the headphone port. Here is the video from DSLR Film Noob showing how it's done: https://youtu.be/Io-JR3aUqII

After this mod is done there is a hole left in the case. This little guy fits right into it with no glue needed. At least it fits on mine. Just split the case, drop it in, and screw it back together. The flat side goes towards the battery compartment as there is less clearance on that one side. Prints upside down with no supports.

Let me know if you find it useful. Thanks!

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/cWmrF0zRqX0