FWIW - This coupler has features similar to thread's coupler
https://cowintools.en.made-in-china....r-Coupler.html
It has the bolt and little ring at the front. I could not find a 2 inch version.
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Tim
2004 2720SL TrailManor, 2 X T105, Trimetric 2030RV, TST TPMS
2003 Tundra Access V8 2X4 w/Tow Pkg
Equal-i-zer 1000, Prodigy, McKesh, UnderCover
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