3-Way Trailer Adapter, Vehicle Connection 7-Way Blade, Trailer Connection 6-Way Pin, 5-Way Flat or 4-Way Flat, Length 9 In., Width 4 In., Height 3 In., Material Nylon 6, For Use With 7-spade, 6 round and 4/5 pin trailer harnesses, Features Connect 7-way flat (spade) pin type terminal connections to 6-way round pin and 4/5 pin trailer connections, Sealed plugs to keep dirt and road debris from corroding connections, Includes One 3 Way Adapter