Adapter insert for using a Beeline Velo 2 with Garmin, Wahoo and third-party bike computer mounts. What's in the box: adapter insert and insert screws x2. The Beeline Velo 2 mount adapter insert is designed for use with third-party bike computer mounts with a 32mm diameter mount insert, with threads integrated into the mount itself. The adapter is not compatible with mounts with threads on the insert itself.