Dutton-Lainson® coupler/hitch ball for boat and other trailer applications For a perfect fit to D-L couplers Machined from solid, cold drawn steel bars SAE Class 1 (for gross trailer weights up to 2,000 lbs.) on the 1-7/8" ball and SAE Class 2 (for gross trailer weights up to 3,500 lbs.) on the 2" ball Interchangeable 1-7/8 and 2" ball sizes 3/4" shank diameter (also includes adapter to fit 1" hole) 1-7/8" shank length Meets SAE and V-5 standards Polished chrome finish Two internally threaded balls share the same 3/4" shank Change back and forth between sizes quickly and easily- no need to have two separate balls