Fulton 1500 lb Bolt-Thru Swing-Away Trailer Jack with 6" dual wheel The jack is the industry's highest capacity swivel mount caster jack. The mount fits up to a 3" X 5" trailer frame. It features a 12" height adjustment range, up to 27" lift. It is made of a heavy gauge steel and a proprietary bushing material for a mount with minimal deflection and maximum support. This includes all necessary mounting hardware.