This bicycle holder with honeycomb pattern is designed to work with a bicycle stem mount from AliExpress (link down below) and it replaces the actual holder part from this product (including the knob).
I'm using it with a Xiaomi Redmi Note 3 Pro with case, so I'm assuming that it will only work with 5.5" smartphones.
You'll need some countersunk M3 bolts and optionally a shorter M4 bolt for the knob.
Support
If you'd like to support me for the 3D models I distribute for free, you can use the following AliExpress affiliate link: https://s.click.aliexpress.com/e/_AoUC8h
Whenever you buy something through this link, I get a small kickback without costs for you :)
The author marked this model as their own original creation.