I have 3 trays for a Yakima Dr. Tray hitch rack. They were redesigned in 2018, and since I have the new ones I don't need these. 2 are used but in great shape, one is brand new. I also have the wheel cups that go with these (not shown in the photo on CL).
The older design didn't work as well with downhill mountain bikes and long-travel trail bikes, but are fine with about any other style of bike.
Use these on your Dr. Tray rack, or if you're a skilled DIY person make a bike rack out of them.
Here's the ad on Craigslist
Email me back if interested.
Clint