This bundle contains two adjustable screw-jack posts finished in a bold orange/red and supplied with a turning bar for manual height adjustment. Each unit is built mainly from steel and intended for supporting joists, basement floors, temporary stairs and other light structural lifting or bracing needs.

Height adjusts from about 19 to 36 inches (48–91 cm). The top and bottom plates measure approximately 3.54 x 5.91 x 1.97 inches (90 x 150 x 50 mm). The screw pole is roughly 1 inch in diameter and about 7.87 inches (200 mm) long. The inner pipe is approximately 1.77 x 0.06 inches (45 x 1.5 mm) and the outer tube about 1.97 x 0.08 inches (50 x 2 mm), providing the telescoping action and screw engagement required for fine adjustment.

Rated center-point load capacity is about 11,023 lb (5 t), making these posts suitable for heavier homeowner tasks where concentrated vertical support is needed. Typical uses include propping up a sagging shed floor, supporting a porch corner, temporary stair or joist shoring, or acting as an adjustable support while making repairs.

The jacks are finished in a bright hue that improves visibility on a worksite and helps distinguish them in a toolbox. Setup is simple: place a jack on a suitable bearing surface or sole plate (timber or steel is often used), extend to near-contact, then use the supplied turning bar to screw the pole to the final position.

Package contents: 2 x basement/floor screw jacks with turning bar. Material: steel. Main color: orange/red. Adjustable height: about 19–36 in (48–91 cm). Top/bottom plate: ~3.54 x 5.91 x 1.97 in (90 x 150 x 50 mm). Screw pole: ~1 in dia, ~7.87 in (200 mm) long. Inner pipe: ~1.77 x 0.06 in (45 x 1.5 mm). Outer tube: ~1.97 x 0.08 in (50 x 2 mm). Center-point load capacity: ~11,023 lb (5 t).

Notes: measurements are manual and may vary slightly. Color may appear different depending on screen settings.

VerdictA solid two-piece set of steel screw jacks that deliver heavy-duty, adjustable support for basements, porches, sheds and other sagging structures. They’re straightforward to install, come with a turning bar, and offer a high center-point capacity (≈11,023 lb / 5 t). Expect sturdy construction and reliable performance for most homeowner repair and temporary-support tasks.

Shawna Fire 5/5

Does the job

Exactly what I needed to temporarily support a joist while I repaired it.

Robert Brantley 5/5

Quick fix for a heavy sagging shed

Worked exactly as needed. I propped a very heavy shed floor back into place in about 10 minutes. Solid support and simple to set up.

George Nicholas Koumantzelis 5/5

Built like a tank — held a porch corner

Sturdy metal and strong welds. These jacks corrected a sagging porch corner easily and felt very robust during use.

Adam Rosen 5/5

Fixed a sagging roof section

Straightened a sagging roof area; I set the jacks on 2x6 boards and they held well while I worked.

Symbols Of Love 4/5

Smaller than expected but heavy-duty

More compact than I thought, but very sturdy and built to last. Perfect for tight spaces.

William G McKnight 3/5

Threads arrived dirty but serviceable

The screw threads had manufacturing grime and were stiff at first. After cleaning and applying anti-seize they operate smoothly.

Steven 4/5

Good quality and value

Well-made units that deliver on durability and function for the price.

Stephanie Black 5/5

Comparable or superior to pricier alternatives

Quality is excellent for the cost. Welds and finish appear stronger than a higher-priced set I tested; I’d choose these again.

Yaocom Adjustable Basement Jack Posts — 2-Pack, 19–36 in Support Posts

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