CURT 56172 Vehicle Side Custom 4 Pin Trailer Wiring Harness, Select Ford Explorer hitches tongue weight Fits trailer hitches 4085 tongue weight Fits trailer hitches with a 2" x 2" receiver tube opening Welded trailer ball accepts a 2" coupler Permanently attached trailer ball cannot be loosened or stolen 2" drop for precise trailer leveling Key operated hitch lock adds security to your trailer Includes two keys for added convenience Hollow shank weighs less and can be used with an anti rattle kit Dead bolt lock style with bent handle for easier operation Easy to operate this class 2 trailer hitch is made for a vehicle specific fit they do offer one of the fastest easiest and most secure ways to wire a vehicle for towing