This is a novel way to hang a U-lock from the back-rack of a bike to free up the space usually used by a water bottle. The hooks are slid onto the pole of the U-lock between the legs, and then the lock is slotted into place for storage.

I designed this to be printed out of TPU to add some flex to the mechanism , gripping onto the rack to reduce noise and the chance of the lock falling.

The design is for a lock with a 27.3mm (~1 inch) diameter

The rack this is designed for is 10.8mm (0.42in), and the tolerance should make the hook "click" into place.