Two or more of these clips can be used to secure a bike lock against the bike frame. This is useful if you don't want to carry a backpack or otherwise stow the lock during cycling.
20 mm Velcro straps can be inserted into the print, one to secure the clip against be bike frame and the other to secure the lock. Velcro straps such as the one below can be used:
Since the part is not highly loaded, most materials can be used. For very long outdoor life, ASA is recommended though.
If there is interest, I might create a version with rubber inserts that cannot rotate around the frame.
The author hasn't provided the model origin yet.