Having trouble removing your old gas cylinder from your office chair, this new tool is designed to make it easy. The gas cylinder or gas lift is a critical component of your gaming/office chair. When the gas cylinder has lost its lifting power and does not swivel as smoothly as it used to, it is time to replace it.  A new gas cylinder will make your office chair as good as new. All gas cylinders bed in over time and can be quite difficult to remove.