DOZYANT Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) Universal Size Fits Most Executive Office Chairs, Highest End Class 4

They do the job, fit perfectly, and hold stuff up.

My 4-year old home office desk chair would slowly lower throughout the day, to the point of becoming really distracting during meetings. It seemed a shame to throw it out and buy a new one, so I looked into replacing the cylinder. A couple of YouTube searches later and I found out that it's an easy thing to do at home as long as you have a decent pipe wrench and a 5-pound hammer. I ordered this new cylinder and it took me about 10 minutes to switch it out with the old one. It definitely has a longer stroke than my old cylinder, making my chair sit about 4 inches higher at the highest setting, but it works, and I can easily lower it to any height I want. Hopefully it lasts longer than my old one, but I'm happy with the purchase.

This Dozyant replacement office chair cylinder is better than the original that came with my Hon Exposure office chair. It's slightly taller, feels very solid, and the original failed after only 3 years. In addition, it was easy to take out the old cylinder (with a good pipe wrench and mallet) and install the new one (no tools required). Highly recommended! No need to buy a new office chair!

These last about 4 years. Make sure you have the tools to replace one. It takes a very large pipe wrench. They work great and I recommend. Wish they last longer. But, four years for this price is fine with me.

Bought this for my home office chair when my last one developed a leak. Easy to replace the old one. New cylinder works VERY well with easy adjustments and strong--not sloppy-holds well. Saved alot of $$ by replacing the cylinder instead of the whole chair. Good quality.

Worked perfectly, was worried I needed to buy a new chair, this was def a economical way to preserve this office chair a little longer. Removal of the old ram is tough, but a hammer and a punch and some anger I was able to get it knocked out without too much pain. Installation was about as easy as it could get.

Our Quill Hazen office chair had a base recall, they sent a replacement for it and the chair began to lower on its own while sitting in it. We're not sure if we accidentally hit the center of the original cylinder or if we had exceeded the weight allowance, as I'm around 220lbs and our toddler will sit on our lap at times and he's around 40lbs. Due to the cylinder not remaining at our desired height, I began searching for a replacement cylinder that would hopefully last for at least the duration of the chair, with us having a growing child. This cylinder caught my eye, due to the weight allowance and 5 year guarantee, and placed the order.This gas lift cylinder included the gloves pictured and a business card that says to search for instructions online on how to replace the cylinder. The included gloves are of decent quality and have been added as a keeper in the toolbox, which have already been used for projects since changing the cylinder. Removing the current cylinder is easy enough using a rubber mallet or hammer and a wrench or a pair of vice-grips. This is a slow and steady project and should not be rushed, otherwise you might break something in the process and will need to replace even more.1. Raise the chair to the maximum height (this makes step 4 easier).2. Lay the chair on the floor.3. Using a rubber mallet or hammer, hit the outer ring of the current cylinder, not the inside, while holding the wheel base until the 2 become separated.4. Using a wrench or vice-grips, rotate the cylinder where it connects to the chair until it disconnects. You will more than likely need to go different directions to fully get the cylinder to release from the base of the chair. If using vice-grips, its easiest if they're applied at a horizontal direction and you're able to push from the top downwards.5. Place the base of the chair, where the wheels are located, in the upright position (the direction that it will be once the chair is fully assembled).6. Insert the large end, non-red cap, into the center of the wheel base.7. Remove the red cap from your ToolKee gas lift cylinder replacement.8. Place the chair on top of the gas lift cylinder and wheel base.This took approximately 10 minutes to install, due to getting everything ready to take the old cylinder out, doing the removal, installation and cleanup. We've had this for almost a month and have not had any issues, even though we have a little director of operations that likes to periodically give himself a raise, while sitting in the chair.I would definitely recommend this gas lift cylinder as a replacement to any office chair, as it was easy to install and can support quite a bit of weight.If you found this review "Helpful", please click the button below.

I have had this 1 hour and it seems great. I am thinking when getting a new office hair, unless it is high end, replacing the shock initially with something of better quality might be a good idea. Getting the shock out is not that easy. I had put it against the neighbors fence to hammer it and the fence fell down. Then it hit the windows and broke them. I tried blaming it on the yard crew, but they were not there.