This is the rubber cap of the mudguard to hold the handlebar when you fold the Xiaomi Mijia scooter M365 to transport it which is very easy to lose
Without it, the scooter usually makes noise when you are transporting it folded.
It fits very well as you can see in the pictures attached.
It is designed to print it in a flexible filament.
Fixed some open surface problem error with some programs
It depends of the printer but If you print it with supports it will be better