Check the listing for details. Trail Jack Extension - for Bottle, Scissor, Trolley Jacks. Condition: New. Listed at 58.00 USD. 911 Motorsports JACK NOT INCLUDED!! This converts your favorite trail jack to use our common 1½" pin/ weld tube, extension and saddle. Weld the tube to your jack, then you can use just our 4x4 saddle or get more lift with the extension. The 6" is included and works good for most vehicles, add the 11" for even more height. -Includes - 1½" weld tube, 6" extension, 4x4 saddle -Weld tube - 1½" x .188" wall DOM - 1 1/8" I.D. -Bottle jacks - Best for 4 ton. Will work on larger jacks, but our extensions are only rated for 4 tons. -H1 scissor jack - our weld tube will press over the pin. It is recommended to weld the tilting part of the pin solid. -Scissor & Trolley jacks - Remove factory pad and weld our tube to the jack base. -Toyota screw jacks - We don't recommend using our extension with these. Our 4x4 saddle alone will work good. It can be purchased separately and will slide over the top easily, after a little sanding.