Fix Sinking Office Chair, Avoid Sinking of Office Chair Height-Adjustable Cylinder Replacement No Tools Needed

If you have moderate hand strength to tighten the screw on this device, it's all you need to keep your chair from ever sinking again. It's a simple mechanical clamp and it works fine.

My office chair had lost its capability to stay at one height and my chair was adjusted up in the morning but slowly went down by the afternoon and the change was very slow. This device was easy to install and be sure to tighten it until you can tighten it no more and it has been "UP, UP and Stay for the past two weeks+".Much less expensive than a new chair.

Not much more to it, it doesn’t stop my chair from sinking. No matter how tight I screw it my chair still sinks. Pretty disappointing.Update- I was wrong. I wasn’t tightening it hard enough. I took a screwdriver and turned it as tight as I could and it’s been working for a couple days. I am wildly relieved. It didn’t come with instructions though so I didn’t know originally.

i had to help it a little bit with a wrench, but it works nicely

I had hope for this but it just doesnt work. I got it as tight as I could but it still starts to slip by the end of the day. It is pretty rugged and its built well, but it just cant grip the cylinder hard enough to keep it from slipping down. I even used to screwdriver to turn the screw to the point where I thought it was going to snap or crush the cylinder but it still didnt grip enough.

I cannot attest to comfort, sturdiness or value. I can say this is a heavy weight clamp and it seems to be working as advertised. I am a big boy so I will see how long it holds up. 2/7/22. EZ to apply. I recommend this over the 2 screw clamp.***2/8/22 So far this clamp holds tight. Make sure you clean all oil of the saft with a solvent of some kind. And snug the thumbscrew by hand. Test it for tightness and tighten some more. Do not over tighten. I like this product.*** 2/10/22 Not as secure as advertised. Post still slips through the clamp, but is better than without it. I will rough up the post to see if that helps.>>>To the seller/manufacturer: What will happen if I raise the post all the way and then drill a hole in the post just above the clamp? If I place a screw in the wall of the post, the post cannot slip down.March 6: Can't say I like it. It is not strong enough for my use. The only way this will work is if you are about 150 pounds and drill a screw hole in the tube so the clamp cannot slip down. Definitely NOT worth MY money.

It has kept my from buying another new chair. You do have to really tighten the thing though.

I've had this for a few months now. It's easy to install, but as others have pointed out, it just slows down the sinking; doesn't stop it. I tried tightening it with a tool as others have also suggested, but it's still the same.