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20 Ton 3" Extension

Safe Jack

  • $ 9600

PN: 37311
UPC: 854185005561

The 3-inch Bottle Jack Extension adds 3 inches of height to the available stroke of a bottle jack. That's like adding two layers of 2X lumber, only it's much safer and more stable! Multiple Extensions can be stacked to increase the height of the hydraulic cylinder (ram.) All of our made-in-the-USA Extensions and Lift Pads feature a solid steel shaft.

Safe Jack utilizes the Extension Screw Collar to create a secure engagement for the Extensions and Lift Pads, as well as to maximize the available stroke to an additional 1.5 inches. These premade Extension Screw Collars are measured specifically for the bottle jack brands we carry. If you have your own bottle jack you wish to use instead, you may need to purchase a Custom Extension Screw Collar. If you opt out of purchasing a Custom Extension Screw Collar altogether, the adapters may still work, but you will not achieve the additional 1.5 inches of stroke. The 20-ton adapters will fit over a bottle jack saddle diameter of 1.75 inches - 2.25 inches (44.45 mm - 57.15 mm.) If the hydraulic cylinder (ram) is significantly smaller than this, we advise against using the adapters without an Extension Screw Collar, as the point of engagement will be unstable.

Purchase a Custom Extension Screw Collar

Purchase a Safe Jack 20-ton Extension Screw Collar (Premade to fit the jacks we carry)


    • Fits over bottle jacks with 1.75 inches - 2.25 inches (44.45 mm - 57.15 mm) diameter saddle
    • 2 inches of internal engagement
    • Steel construction
    • Durable powder coat finish
    • Compatible with most bottle jacks
    • Numerous stacking combinations with other Safe Jack Extensions & Lift Pads
    • Made in the USA

    Customer Reviews

    Based on 2 reviews

    Excellent quality!

    Andrew Gillespie (Granville, US)

    Just as advertised. Very well made. Great service.

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