Hi everybody, Andy here with etrailer.com, and today, we're gonna take a quick look at this Bulldog Gooseneck Coupler Head. Now, this cast steel coupler head is designed to be welded to a three inch or four inch diameter tubing to create a heavy-duty gooseneck coupler with fast and easy latching action. It is self latching, so you would just lower the coupler onto the gooseneck ball, and the… see more >