Bicycle horn mount

A mount for a bicycle horn I bought from aliexpress was absolute useless. So I decided to create my own one. Here are some specs:
- diameter of horn tube is 16.5 mm near the tube beginning (the tube is actually a cone)
- diameter of the handlebar near the grip is 22.5 mm
- you need M3 screw and nut. The minimal thread length of the screw is 20 mm

If you have different diameter of handlebar, just let me know, I can remodel it in few seconds

UPDATE 07.05.2019: Added mount for 25 mm handlebar