Bulldog® gooseneck hitches, gooseneck couplers, trailer couplers and wedge-latch elements feature a high-strength, heavy duty design that makes them the most Tough and Trusted trailer components available today. From 1920 the Bulldog brand has been the choice of Military and Manufacturers everywhere. Bulldog jacks in particular are built with uncompromising strength and materials engineered to hold up under rigorous working conditions. The secret to success is having equipment you can count on and Bulldog is the perfect choice where trailering is concerned.