The holder is designed to snap into place and holds the smartphone in a horizontal direction. I love the great display for navigation.
The case for the smartphone (redmi 9T) is printed in TPU. If you got another model you only need 3 holes to adapt it to your model.
I´ve printed the holder in a upright postion to get strong stability to the stem mount.
Update 21.08.2022:
3km on cobblestones with 8bar was too much ;-(
Updated a stronger design
The author marked this model as their own original creation.