Designed for use with marine and utility trailers, Fulton brand tongue jacks are time-tested and application-proven. Our bolt-on versions include all necessary mounting hardware. For weld-on applications, we offer two styles of mounts for both 1/2" and 3/8" pull pin models. The Fulton brand bolt-thru swivel mounts use 3-D formed heavy-gauge steel stampings and a proprietary bushing material for a mount with minimal deflection and maximum support. All mounts fit up to a 3" x 5" trailer frame.