Curt Manufacturing 45220 Towing Wiring Fits trailer hitches with a 2" x 2" receiver tube opening Features two hitch pin holes for 7 1/2" or 10 1/2" length Equipped with a 1" hole to accept a trailer ball shank 3/4" rise or 2" drop for precise trailer leveling Hollow shank weighs less and can be used with an anti-rattle kit