This is a mounting plate for the "E1" style of motorcycle communicator systems that can be found at the usual suspect websites. I purchased one recently however since I have 2 helmets I use, I needed an extra. I attached the Fusion file so you can modify it easier if you need to.

Print Settings

Rafts:

Doesn't Matter

Supports:

Resolution:

Doesn't matter (I used 0,28)

Infill:

Notes:

If you have problems with the edges lifting use a raft or brim. Relatively quick and easy print. I used 0.28mm layer height with 45% infill but that shouldn't matter much.