This aluminum 11” x 16" x 1” Receiver Hitch Rack replaces Add On Part 678-035. This rack works with the horizontal receiver hitch trailer hitch, 1 ¼”. The tongue length is 4 7/8”. It is lightweight making it easier to put on and off the bike. It is very well constructed to hold heavy loads and will last a long time without rusting. Made in the U.S.A.