C.E. Smith Trailer Hub Kit Package 1-3/8" - 1-1/16" Stud 13511. Simply remove your old hub and replace with this pre assembled and pre greased hub. Comes with dust cap cotter pin and wheel nuts. Spindle: 1-3/8" - 1-1/16" Bolt Cir: 5 x 4.5 Cap: 1750...