Curt Manufacturing 45230 Towing Wiring Fits trailer hitches with a 2" x 2" receiver tube opening Features two hitch pin holes for 8 1/8" or 11 1/8" length Equipped with a 1" hole to accept a trailer ball shank 2" rise or 4" drop for precise trailer leveling Hollow shank weighs less and can be used with an anti-rattle kit