Fulton Fold - Away Folding Coupler Kit. Space saver: do - it - yourself kit that provides professional results! Fold-Away Couplers provide space saving alternatives for easy storage. The patented cast hinge design offer strength coupled with a sleek appearance, take a look: Reduces length by 34" for trailers with 3500 lb. gross trailer weight; Allows 34" of the trailer tongue to fold-away, letting a boat trailer fit inside most smaller garages; Excellent corrosion protection with Z-Max 600-hour clear zinc finish; Installs easily on an existing 3 x 3" or 3 x 4" trailer tongue; Includes all mounting hardware and complete instruction manual; Meets SAE J684 requirements. Order Now! Fulton 3x4" Fold-Away Folding Coupler Kit