For years, Fulton couplers have set the standard by which All other couplers are measured. Fulton has been manufacturing stamped steel couplers for over 60 years, and has been at the forefront of quality, technological development, and reliability since they began manufacturing operations. There is a Fulton coupler or accessory that is matched to your application, whether you're looking for a stamped steel straight coupler, a-frame coupler, or convenient fold-away coupler. Fulton also offers a number of options for converting your existing coupler to fold-away operation. Selecting the proper Fulton coupler requires attention to a few key details. First, choose the ball size that matches the trailer weight. Then choose the channel width and style that matches the trailer tongue. A-Frame couplers mount on a-frame style trailers (50 degree mounts) and are available in classes III and IV. Straight couplers generally mount on a straight channel, and are available in classes I through IV. Fold-away couplers enable the straight-mounted coupler to be unlatched at the hinged point and folded to gain storage space.