CURT Fusion Trailer Hitch Mount with 1-7/8-Inch Ball & Pin, Fits 2-Inch Receiver, 5,000 lbs, 2-In Drop Model 45131CURT Fusion Trailer Hitch Mount with 1 7 8 Inch Ball & Pin, Fits 2 Inch Receiver, 5,000 lbs, 2 In Drop Model 45131 Arm yourself with confidence with a CURT Fusion ball mount. Much like our loaded ball mounts, CURT Fusion mounts come with a trailer ball pre attached to the mounting platform to provide a ready to tow solution right out the package. Unlike a loaded ball mount, however, a Fusion ball mount features a trailer ball that is permanently fixed