The industry standard in swivel mount jacks, these are time tested and application proven. From marine and utility trailers, to industrial outriggers, to farm implements, Fulton snap ring swivel jacks have seen it all, and performed superbly. Fulton snap-ring mounts fit up to a 3" X 5" trailer frame. 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.