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Optimize your towing abilities with the Collar-Lok Trailer Coupler A-Frame Mount by BULLDOG. This industry leading trailer mount is designed for utility horse livestock cargo and construction trailer applications. It features the only automatic and continuously tight ball fit design in the industry. The adjustable couplers assure level operation for trailers when pulled by a variety of different vehicles. The hinged ball socket has a clear visual indication of proper closure for easy hook up. It’s strong in both static and dynamic loading conditions. A variety of coupler styles tongue mounts and latches allow configurations to match virtually any trailer. The A-frame mount coupler has a length of 18 inches width of 11.4 inches and height of 5.5 inches. It has a ball size of 2.3125 inches and 4B style. Haul your next load with confidence and in style with the Collar-Lok Trailer Coupler A-Frame Mount by BULLDOG.