Heavy duty Gas Spring Pneumatic cylinder cartridge Spindle Strut Piston replacement for standard office chair.

• 4” Travel
• Main body is 1.1" (28mm) diameter
• 9.5” long

Please measure the existing piston body to confirm it is between 9" - 10" long and ensure the travel is no longer than 4.5".

The tapered end that goes into the seat plate / mechanism has a standard 17-4 taper.  The steel used is heat treated making it stronger.  All hardware including bearing and retaining clip are included.