Summary

A parametric speaker spacer mounting bracket. Use to add on to speaker adapters so they can be installed in a vehicle. To add these on, use either screws/glue or use a 3D modeling program like Tinkercad to add them to the speaker adapter model.

Can be used with these speaker adapter things 
Speaker Spacer Ring Generator: https://www.thingiverse.com/thing:2924217
Parametric 6x9 Speaker Spacer: https://www.thingiverse.com/thing:4717695