Today were going to take a quick look at the Fulton Bolt-Through swivel marine jack part #: FXP10. This jack is designed to bolt onto the frame of your trailer using these mounting brackets and bolts included with the jack. It has a 6 inch diameter wheel on the bottom to help maneuvering the trailer around. It has a bracket height of 12 inches, thats from the bottom of the wheel to the center… see more >