Description not precise enough - Damage

This is exactly what I wanted, but I did not read the review of "Rema" before ordering ... Too bad because it ends with a return!
It is strange indeed that the adapter does not take into account the actual diameter of a standard 1 inch hanger because the clamping part on the handlebar (1 inch diameter) is not wide enough to be gripped by the adapter.
I thought it was "designed to" !!!