Btwin bike rack wheel holder

Fits on B'twin Rack'n ride 520 trailer hitch mounted bicycle carrier. I have lost one of the wheel mounting fixture, so designed a new one instead of it. The crossbeams on the pictures are custom made, longer version to fit XL size downhill bikes, but kept the original 30x20 square tubing cross section. The longer beams got an extra nut on their ends, and with a screw putted in, there is no chance to lose anymore fixture.
To tie the wheel in the fixture, I use ordinary pedal straps, in my case Zefal ones. I have made it a few years ago, and using since then with complete trust.
Printed out of Fritz PET-G "dark grey"