Omyoffice 4.7 inch Office Chair Gas Lift Cylinder, Universal Size, Heavy Duty, Adjustable Height, Solid Black, Alloy Steel, Office Use

Once you get the old gas cylinder out, using just a hammer and a pipe wrench, installation of the new cylinders is easy-peasy WITHOUT The use of tools. I measured the old cylinder before ordering the new one, and selected the one that matched the dimensions I had, but the new one still extends higher than what the old one did.

Awesome score, heavy duty. Works great in my gamer racing chair

Didn't think it would fit, but fit like a glove. Guess I measured right. Works like a charm! Shipping was slow. Musta been because Amazon laid off 13 THOUSAND!!! workers before the holidays!

Old desk chair was constantly "lowering" on its own. Instead of replacing the whole chair, I bought this replacement cylinder, followed some youtube video instructions, and within 5 minutes, chair is working great! Happy customer here.

I have been using this hydraulic chair shaft for nearly a year. It's very heavy duty and sturdy. It was very easy to remove the old shaft and put in the new one. The old shaft lost its pressure and the seat would sink slowly over time. This one hasn't has one problem. If you need a new seat support shaft that is easy to install, this one will work fine.