The bracket is mounted directly on the stem in the bolts that hold the handlebars in place.

The arms of the bracket can rotate so that they fit on stems with bolts between 16 - 41mm.

The holder fits Garmin Edge 20, 25, 130, 200, 500, 510, 520, 800, 820, 1000 and 1030.

Can also be used for Wahoo

Bolts for mounting and spacers included.