Reversible Trailer Ball - Never get caught with the wrong size trailer ball! Flats on bolt head and nut allow you to attach a wrench to both sides for easy removal & installation. Solid machined steel ball with 3/4" diameter grade 8 bolt, reversible. Chrome finish. Ball diameter 1 7/8" & 2", shank diameter 3/4", shank length 4 3/4" (extends through balls) and towing capacity 6000 lbs. (each ball).