Use this adjustable tube mount and mounting arm to easily secure your compatible Garmin device (sold separately).
- The Tread Base /Zumo mount has a ball joint size of 1” (25.4 mm).
- The Tread 8" / 10" Mount has a ball joint size of 1.5” (38.1 mm) and will fit a tube from 1.5 inches to 2.5 inches in diameter.