Review on 📲 AccessoryBasics 2 Pack of 3.15" Adhesive Mounting Disks for Boat Car Dashboard GPS - [Compatible with Garmin Nuvi Magellan GPS & iPhone Smartphone Mount] - Prime Quality! by Tone Hatton

Did the job for me to install GPS on the dashboard. Some suggestions for this usage that may not be obvious: 1. This disc does not hold up well on tearing with any curvature. Consider using foam tape under the disc.2. Consider using fine sandpaper to clean the bonded area on the dash. This improves adhesion.3. The diameter of these discs are as advertised so they will fit your GPS base exactly like mine. But buying the next larger size can serve you better because a. GPS positioning on disk becomes easier and less critical. b. The contact area with the torpedo increases.