1-7/8" X 2 Inch Ball Trailer Coupling CAP 2000 LBS Hitch Back Coupler Straight Tongue RV Parts Camper Caravan Accessories
https://www.vogueparade.com/shopping/EN/200004043/1/1005003733599483/1-78andquot-x-2-inch-ball-trailer-coupling-cap-2000-lbs-hitch-back-coupler-straight-tongue-rv-parts-camper-caravan-accessories/