The Original Office Chair Cylinder Removal Tool (As Seen On PBS) - Easily Remove Your Old Gas Lift Piston from Any Office Chair

Works perfect for getting the top part of the lift out of my Herman Miller Aeron! I tried a pipe wrench no luck this easily popped it out and a couple blows from a hammer loosened the base of the lift, install was so easy.

Works great, as stated. You can remove the piston with ease using this. However, you can also do it without this tool by placing you foot firmly on chair base, grabbing the armrests, and shaking the chair side to side while pulling upward. Requires quite a bit of effort, but it can be done. This tool makes it easy with no physical exertion. You will still net a hammer or mallet to bang the bottom of the piston out of the base. You can find several YouTube videos on this.

Works great ! easy to use, great price

I tried removing my worn out pneumatic chair cylinder following the directions that came with the chair. IT DID NOT WORK. Once this kit arrived it was fast and so easy. I regret not ordering it at the same time and saving myself aggravation.

Worked perfectly. For most chairs, you should only need 1 ring - be sure to tighten it securely around the piston, and then slowly (half turn at a time) use the jack screws to pop out the cylinder. I used this on 3 different chairs the night that it arrived - exactly the tool we needed - no hassles!

Why did they design these so that they're the same thickness as the bottom of gas cylinders? That's zero insight. They should be thicker so that the bolts don't interfere with the gas cylinder. As such, this tool does NOT work well for low-profile gas cylinders. And yes, I have the cylinder in the highest position prior to using this product. Worse, the intended longer bolts will not fit since there is not enough room between the cylinder base and the bottom ring you mount. So I had to use the longer bolts in one of the rings, and then steal the shorter bolts to use for pushing the two rings apart. This means I had to push the rings apart a little, re-seat the lower ring, and repeat about 3-4 times. And the shorter bolts are not tampered as much at their ends like the longer bolts, so applying pressure will deform the last bit of thread, making them more difficult to remove later. I even had to cut off my chair's plastic dust covers just to use the shorter bolts, which means throwing them away afterwards.Finally, using this tool is destructive, as the bolts will scrape away metal from the rings when used (see photos).This "original" office chair cylinder removal tool isn't so great. So many oversights make this tool a poor purchase.

The lift for my favorite chair went out 3 months into use. I got a replacement lift from the manufacturer, but I couldn’t get the part off to fix it. I spent a year + just manually lifting the seat every hour or so because I genuinely loved the chair.I found this product when scrolling through YouTube trying to figure out a solution. I didn’t have the upper body strength to make the other solutions work. Honestly, the video looked too good to be true. The actual product was heavier than I expected, but it was incredibly sturdy!The instructions were clear, and the product was easy to use, just pay attention to adjusting the screws equally. It was so fast! Within 20 minutes, I had the lift replaced and my chair reassembled! It might be an expense for just one replacement, but salvaging my chair was worth it. And besides, I am prepared for the next lift that goes out!

I ordered the removal tool by itself as the chair manufacturer sent me a new gas lift under warranty. Firstly, I did not receive the gloves that were mentioned, which would have been nice to have.I watched the video twice and read the instructions twice as well. It seemed pretty straight forward, so I went to work. I put the first collar on, but even at the loosest setting it never slid as easily as the one in the video. I think the the cylinder on my chair may be of a larger diameter than average. Anyway, it seemed to be attached well enough and I was able to scooch it up to the bottom of the chair seat. I put the second collar on, scooched it up against the first one, made sure the screws were not aligned, and tightened it down as much as I could. I started on the removal screws and got those tightened, too, but noticed that they just seemed to push apart the two collars and not push apart the cylinder from the chair. The instructions say if it doesn't work to basically remove everything and start over. So I did that, except that half of the second collar (the one that the removal screws go into) was now stuck to the cylinder. I put the first collar back on, really made sure it was up as high as possible. I feel like maybe it should have gone over the black collar already on the chair, but that wasn't possible. So I tried again and this time when I screwed the removal screws in they went in between the two pieces of the top collar and just pushed those apart. Note, even at the tightest setting there was a gap between the two collar pieces on both sides and both collars, which is why I think maybe the cylinder of my chair is too big for this tool. So I tried to remove everything again and now the whole bottom collar is stuck to the chair cylinder, even with all the screws taken out. It won't budge. So I can't even return the thing.