Lilfurni Adjustable Hydraulic Gas Lift Cylinder,Heavy Duty,Universal Size Replacement for Most Stool Chairs,Smooth and Noiseless

8"
STROKE ADJUSTABLE: Minimum
length: 14.37 inches ( 36.5 cm);
Maximum length: 22.24 inches ( 56.5 cm). You can adjust the fit height to a comfortable place. It may not fit all stools or chairs, so please measure it before you buy it.
HEAVY DUTY: Gas lift cylinder that holds great weights - tall center support column of the chair. Holds up to 450 lbs on most office, executive and computer chairs.
CYLINDER DIAMETER: Universal
modelOuter cylinder: 2 inches ( 5.0 cm), Inner
cylinder: 1 inche ( 2.8 cm).
SMOOTH and NOISELESS: Pneumatic shock makes it easy to rotate 360 degrees smoothly and silentlyCan be installed easily. (You can reference instructions on Youtube. )
GUARANTEE: Certified by SGS Test5-Year quality warranty, we are dedicated to providing 100% customer satisfaction.