This is an End Bike Mirror adapter for the Gen3 Verve, a XiaoMi365 clone available at Costco Canada.
You can plug it in the handlebar ends and use the commonly available Hafny Bar End Bike Mirror.
It was designed to be printed flat for maximal strength. A functional prototype in PLA at 20% infill was tested on the roads.
A more permanent ‘’all walls 100% solid model'' PETG version is currently being used.
Enjoy!
It is a remix from https://www.thingiverse.com/thing:4974220
The author hasn't provided the model origin yet.