Fulton Bolt-On Fold-Away Hinge Kit for 3X4 Tongues up to 6000 lbs BOLT-ONEASY-TO-INSTALLEnables up to 36" of the Trailer Tongue to Fold Away, Letting a Boat Trailer fit Inside most Smaller Garages. Installs Easily on an Existing 3" x 4" Trailer Tongue Provides a Professional Look with a Design that Hides Manually Cut Surfaces. Step by Step Instructions Included All Mounting Hardware Included Industry Leading High Performance Zinc Finish (600 Hours Salt Spray Rating)5 Year Warranty NOTE: THIS IS FOR THE HINGE KIT ONLY, COUPLER NOT INCLUDED