This AirTag mount is sleek and compatible to fit underneath my water bottle mount. The two work flawlessly together. My only complaint for which I deducted a star is that there is no overlap between the two halves, so even when mounted with the accompanying screws you can see a gap between the pieces. This means it's certainly not waterproof like I had hoped so when washing the bike or leaving it our in rain I wouldn't have to worry about the AirTag.
Great, easy to install
The fitting is pretty good and holds the AirTag well. The tag rattles a bit so I used a small piece of paper to stop it from moving. The screws that came with it were also a bit long, so I had to go to the bike shop to find the correct size.
Easy to install and works as advertised. Best option out of what’s out there.
It’s still early, but so far, so good. The airtag fits well and signal goes through, as hoped. Do wish that the mounting screws that it came with were made of stainless steel instead of regular steel that will rust in no time.