Here's an example of the dog bone I have.
https://www.amazon.com/dp/B09HV8KB24
The description shows it as great for generator, rv, motorhome, etc.
But it also says it make 2 30 amp receptacles provide FULL 50 amp power, which I know isn't true. It's only 60 amps, 30 amps per leg, not 100 amps with 50 amps per leg.