Review on MySit 5.5" Office Chair Gas Lift Cylinder Heavy Duty Replacement Parts - 450Lbs Long Stroke Hydraulic Pneumatic Shock Piston Universal Size Fits Most Executive Chairs, Gaming Chair, Class 4 by Christine Gillis

Office ergonomics are important. If you spend a lot of time at a keyboard, it's important that you're sitting at the right level for good typing. If your desk is a little too high, it can be a lot easier to change your chair than your desk. You want to sit as high up as you can go so that the keyboard is close to your lap. I also like to sit a bit higher up so I can rest my feet on a footrest or on the base of the chair. This lift cylinder will raise the range of seat heights available to you by about 3 or 4 inches from a standard chair. This particular lift has been functioning fine for several weeks now and has no issues.If you've never swapped out a lift cylinder, it can be a bit of work. You'll want a good rubber mallet or dead-blow hammer, and then you really need to beat on the base of the chair to get it off. It's going to be noisy and it might take a fair amount of effort, but be persistent and knock things around a few different ways and it will come apart. Installing the new one is as simple as setting it into place.