10 Inches to 15 Inches Office Chair Gas Lift Cylinder Replacement, 4.5'' Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Diameter Fit for Most Office Chair, Class 4 (Polished Steel)

Fits perfectly!

If your office chair falls or will not hold the proper height these will fix you right up. Easy to install as well

Super produit très bonne qualité, bien emballé, avec un envoi très rapide, le top

Anders als bei anderen Gasdruckfedsrn , hält diese auch die Höhe. Das betrifft besonders hochwertige Bürostühle, die bereits ein deutsches Eigengewicht haben

My office chair turned out to be a disappointment after the backrest wouldn't stay up due to the plastic turn knob not staying tight no matter what I did. Then when my chair started to lose its lift on a regular basis I thought I would have to buy a new chair. I would sit down at my desk and realize I was sitting at the same height as a child does. Sad, because my previous chair lasted about 18 years. When I discovered this gas lift cylinder replacement I thought it would be worth a try to mitigate the expense of a new chair. I took the measurements from my chair in regards to how far it lifted from where it bottomed out to where it extended to and determined the 4.5" stroke height was the one I needed. I didn't know what "stroke height" was but I figured it out. Once I received it, I needed to remove the old cylinder, which was the HARDEST part of the task. I removed one end with a few hardy smacks with a hammer as illustrated on YouTube. Additionally, after unsuccessfully removing the other end with a pipe wrench as instructed, I had to disassemble the chair's mechanism to dislodge the end of it that was completely stuck in the chair pan. It took some creativity to get it done, but after about an hour of trial and error I got the old one out. At that point installing this new cylinder was SUPER easy. It fit exactly like it was supposed to. The chair is fixed! And I even fixed the other problem of the backrest not staying in position after seeing a fix on YouTube while looking at videos for installing a new chair cylinder. Now my chair is actually better than it was to begin with. The chair is stable and raises and lowers well. I look forward to an uplifting experience from this point forward (pun intended). I would recommend this fix to anyone who wants to save $150-$200+ on a new chair.

Very well made. Super sturdy.