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.