High Piston Adjustable (Extended Height:18.5''/28.74'') Hydraulic Gas Lift Cylinder,Universal Size Replacement for Most Stool Chairs,Smooth and Noiseless(Black)

10 STROKE ADJUSTABLE: Minimum length: 18.5 inches（47cm）; Maximum length : 28.74 inches（73cm）.

You can find the correct seat height for comfortable sitting.

HEAVY DUTY :Gas lift cylinder that holds great weights - tall center support column of the chair.

Holds up to 450 lbs on bar stool, drafting stool and chair, drawing stool and chair.

CYLINDER DIAMETER: Universal model，Outer cylinder: 2 inches (5.0cm), Inner cylinder: 1 inche (2.8cm).

SMOOTH and NOISELESS: Pneumatic shock makes it easy to rotate 360 degrees smoothly and silently.