This is a Garmin mount made using 3D printing from Nylon designed to hold a Garmin Edge on the anchor point for the trek knock block system.
The mount attaches to the threaded hole on the top tube. This can be seen in the gallery photo.
The mounts will hold any of the current Garmin models from the small 130 to the largest 1030 but please note there are two sizes. Fitments are as follows:
Short: 25, 130, 200, 500, 510, 520, 530, 820, 830
Long: Touring, 800, 810, 1000, 1030