What is this style of attachment called?

[catmanjan]

I have seen this C channel and pin attachment on many 2 wheel tractors, I also have something similar on my hinomoto MB 1100

https://imgur.com/a/2VXM5rn

 

[bcp]

Sleeve hitch. Yours is wider than most, maybe for plow adjustment sideways.

sleeve hitch at DuckDuckGo

DuckDuckGo. Privacy, Simplified.

duckduckgo.com

Bruce