This is the lowest price ever for this 2-pack magnetic vent-mount:
I bought this recently (for a higher price) and was impressed:
1. strongest magnets in a vent mount that I have ever seen.
2. locking mechanism with 2 settings to secure it to the vent.
3. ball head to adjust the viewing angle.
4. long enough to hold the phone away from the vent.
5. 2-pack, and each mount comes with 2 metal plates.
This is the best vent/magnetic mount so far for my Samsung Galaxy S6 with TPU case, and also for a Garmin 1450 GPS.