"Upgrade your in-vehicle Garmin mount with this RAM® Twist-Lock™ Suction Cup mounting kit, made specifically for Garmin GPS factory mounting brackets that accommodate the Garmin ""G-Ball"" and are compatible with a 17mm ball. This kit consists of a 3.3"" diameter RAM® Twist-Lock™ suction cup, the RAM® Snap-Link™ Socket with Angled Diamond Plate, and the 3"" Long RAM® Snap-Link™ Ball Adapter. Pair this kit with popular Garmin GPS units like the Drive, DriveSmart, nüvi series, and more. A fan favorite for use on vehicle windshields, the RAM® Twist-Lock™ suction cup base provides an extra strong hold on any smooth, nonporous surface, enabling your GPS unit to be there for the long haul."