Bulldog gooseneck couplers are quick and easy to engage and strong and secure on the road. Our unique, patented, extruded locking plate design and high-strength steel components make Bulldog gooseneck couplers 65% stronger than similar products. Easy-grip locking handle is accessible from any position, even with a glove on Self-centering locking plate lets you miss the ball by more than an inch Tight ball fit reduces jarring when changing speeds or on rough roads Heavy-duty construction provides unmatched strength User-friendly design is simple to use Quickly to hook up and disconnect Easy vertical adjustment