Andersen Mfg 3452 1.87 In. Greaseless Single Alumiball - Rapid Hitch With 3,500 Lbs Gtwr - While Supplies Last. Composite nylon cap snaps into place and precludes the need to lubricate the tow ball and trailer coupler Rated at 3,500 pound Lifetime replacement warranty on nylon cap 1 7/8 inches greaseless single alumiball for the rapid hitch Made in the USA