Service part / kit · Dual Hitch 2-inch (50 mm) ball hitch and 3-inch (76 mm) lunette eye in one reversible assembly. · qty For HWY-Mid Frame and HWY-225. Combination 2-inch (50 mm) ball hitch and 3-inch (76 mm) lunette eye in one reversible assembly — part number 301441. Used by the engines and generator sets below.