Akron Products Big-Moe Adjustable Floor Jack - Size Range 4'8"-8'4" (11GA)

I'm using 5 of these to support the house. For unintelligible reasons beyond my understanding, it is impossible to find proper supports (concrete-filled steel tubes) at any home improvement stores near me. My old supports were failing so I was left with no other choice but to use these. These are very heavy duty. The steel support plates are 25% thicker than the junk jack posts sold at big box stores. You can clearly see the difference in quality.I made 2 1/2 thick standoffs using high precision, high strength grout. Wait 2 or 3 days to cure and this kind of grout can support at least one ton per square inch; at 28 days it will support many tons per square inch. I placed these jack stands on the grout standoffs, very slowly jacked these in place and these are successfully supporting the house.These have to be some of the best floor jacks you can possibly buy. It's definitely worth the money.

Works good and very sterdy

Much more beef at a lower price than the big box options.

This post is really nice, and I have installed plenty of them for various jobs and used some for quick temporary support on other jobs. The only reason for the 4 stars is they can sometimes be difficult to turn up under a load. i often need to use a large pipe wrench to hold the collar from turning on the pole while turning the adjusting screw up. I'm sure the company could create a notch to mate the collar and pole to prevent this in the future, but they are great otherwise and still worth the money to me despite the need for the small improvement that would prevent the need of a pipe wrench.

Easy to install,I didn't like that it was dragged and some of the packaged assembly parts were opened and out of the packages from being dragged

This can be used to shore up joists so that they do not sag more. But due to the design, it cannot be used to raise a joist. The plate into which the adjusting bolt screws is only connected to the main column by friction. At some point, the plate begins to spin along with the bolt, thereby making it impossible to extend the bolt further. I bought this to raise a joist 1", but, because of the design, it cannot do it.

I used 2 of these to replace a post holding up a roof with maybe a weight of 2000 pounds or less (the cement tiles on the roof are heavy). I chose this jack (which is over massive for this application) to make me feel good in a feeling of certainty that the jacks were stable - and it worked out that way. No nerve troubles. Unlike with some jacks the base plates and screw cap are not welded to the main tubes. Since the deck was off level where the jacks were placed that was a plus. Maybe a big lateral force with the screw all the way out could unseat the cap? I didn't worry about it. The plates top and bottom are of thick steel. Some people have reported trouble in recieving big screw jacks through ups - on amazon and the big box stores websites. I recieved one box with no plates or screw and ups had sent the other jack back - probably the box was torn up too. bic sent another and referred me to akron to get the missing parts. Patience is a virtue.

Very strong, thick plates, I would buy again

There was a missing piece but we had to improvise.