Croozer Peppa transport cap for shaft

When folding the Croozer bike trailer, the wheels can be laid in the (folded) trailer to save space. With that, I am always afraid that during transport of the folded trailer, sooner or later the shafts will pierce the fabric or damage something else.

Does it make sense? Maybe I'm exaggerating / overthinking it, anyway....

The caps fit loosely over the shaft and lock as like the wheels on the trailer itself to prevent them from falling off.

Position ball-lock and hole diameter (parking) brake disc differ suspended Croozer bike trailers.