Mysit 28mm Office Chair Gas Cylinder Removal Tool Kit - 2-Piece Stainless Steel Set for Fixing Sinking Chairs, Universal 1.1-inch Lift Cylinder Replacement Tool

Worked as advertised, just be sure to tighten the collar if you want to remove it from the chair, pretty simple to use, I think it's a lil over priced but considering Amazon's cut, and making a profit it's fine, it's in the price range of a brand new pipe wrench. No damage to the cylinder if you wanted to re-use it potentially. Used it to dislodge a broken gas cylinder from a used Embody chair I bought.

My 11-year-old Steelcase Leap V2 chair��s gas cylinder finally gave up. After ordering a replacement, I initially tried removing the old cylinder using the pipe wrench method. My smaller wrench didn��t work, so I bought a larger 24" pipe wrench��but that didn��t work either. I even used my floor jack��s pry handle over the wrench��s threaded section to get more leverage, but still couldn��t get the cylinder out.This tool was a last-ditch effort.When it arrived from Amazon, the packaging had a small amount of surface rust on a few of the screws. A bit of WD-40 and a paper towel took care of that easily. One of the threads didn��t look cleanly cut, and threading one of the tension screws felt a little too tight. I added a drop of silicone oil and carefully worked the screw in and out until it moved smoothly.Once prepped, installing the tool onto the chair was straightforward. The unthreaded collar goes against the seat base and stays loose to allow tension buildup. The threaded collar sits below it, and tightening it applies upward force to separate the seat base from the cylinder.The process was quick and easy. I gradually applied about a quarter turn to each tension screw until the seat base popped off��no drama, nothing fell, and there was no splintering or damage to either the seat or the gas cylinder. I��m honestly impressed. If I had found this tool earlier, I could have saved myself $50 on monkey wrenches and a lot of frustration.This is definitely a tool I��m keeping in case I ever need it again!

Works well

I have used this on 4 office chairs. The tool works very well. All other methods as recommended on YouTube failed on one chair so I bought the tool. Tip: Instructions are not clear.1. Wipe off oil from chair piston. Install first clamp against the underside of the seat. Do NOT tighten, it must be free to slide on the piston. Install the second clamp with the jack screws next. Lubricate the jack screws with a little oil or WD40. Tighten the jack screws alternately. This tool generates tremendous force. The piston will slowly be pushed out of the chair seat plate.

This thing is an absolute game changer. Gas lift was crapping out and it REFUSED to budge no katyer how much WD40 and banging and wrenching.The key thing, the collar that you tighten you need to ABSOLUTELY make it death grip that bar. You screw the two collar halves equally to attach it. The slipping ring will likley not close all the way together. Thats fine. The one that grips the bar, it wont either but thats the point. It gives you room to really wrench it down. Evenly screw together at first, then really tighten it HARD.The only minor issue I had was that I had no room to use the wrench on the bolts that you use to press against the base to lift the strut out. Thats fine. Have the gas strut fully extended, then rip that flimsy clip off on the bottom. The thicker casing comes off and you get plenty of room. Ya aint gonna save the busted lift anyways. Wear gloves, its greasy work. It took me under 5 mins to pop the gas lift loose.