Wheel for Suitcase or laugage (Interlocked Materials

My wheel broke, so i needed a new one. This one is a multimaterial Interlocked Design (ASA inner core, Hard TPU outside). The bearing i use are 2x 30mm OD with 9mm thickness. 
The 2 Materials are interlocked, so that the outer ring is kept in place. 
You can of course also only print the whole thing in TPU. But then i would highly suggest, you use a hard tpu.
First i needed a Wheel for a Wenger Suitcase.  So i designed it for it. After a few months i needed aanother wheel for a different Suitcase, and …surprise this wheel also fitted!