Dan Gilchrist said:
Eric Reuter said:
These are plastic. The challenge was finding one for a 1-1/4" receiver. The 2" ones are more common, I think.
Mine fits both. https://www.amazon.com/RailDriver-American-Knuckle-Coupler-Decorative/dp/B000E794VK
I have that adapter in the basement, and had no idea where I got it. Now I know.