Converting a Gas height adjustment office swivel chair to Manual operation is simple and inexpensive. Simply remove the gas cylinder assembly from both the mechanism and the 5 leg chair base. Replace that gas cylinder assembly with our http://www.swivel-chair-parts.com/twistomatic.html--it's easy and economical. How to remove.

All conversions will require the "COM" purchase. Please note the diameter of your column being removed. All 2" diameter columns will require an adapter bushing #65 to fit into your old chair 5 leg base.

A good reason for converting is that usually for a single user, height adjustment is not an issue. The chair height once set, will remain at that height while being used. To adjust or change the height, simply spin the chair while standing in either direction to raise or lower.