【4-Inch Adjustable Height】This gas cylinder has a 2.4" (60mm) sinking depth, with a compressed height of 7.5" (190mm) and fully extends to 11.2" (284mm). The 4" stroke length ensures smooth height adjustment, giving you extra lift for optimal seating comfort. tip: Measure your chair’s outer cylinder before ordering to ensure a perfect fit! 【Fits Most Office Chairs】This heavy-duty gas cylinder Outer cylinder diameter 50mm (1.97 inches) Inner cylinder diameter 28mm (1.1 inches), making it compatible with most office chairs. Important: Double-check youGesture Chairr chair’s measurements before buying. Fit most Short office chairs including Herman Miller Sayl,Steelcase Gesture, Haworth Zody、Soji、very, sihoo m18 and more, Not compatible with IKEA and select other brands. 【Premium Class 4 Gas Cylinder 】This office chair lift cylinder is built with high-grade steel and rigorously tested to meet BIFMA/ANSI industry standards. Designed for maximum durability, it supports up to 1000 lbs, ensuring long-lasting performance for demanding workspaces. 【Easy to installation】Tired of a sinking office chair? Just remove your old cylinder with a hammer or wrench, then snap our office chair cylinder replacement into place. Features buttery-smooth 360° rotation and rock-solid stability – no more annoying drops or wobbles! 【Package】4" Stroke Short Office Chair lift Cylinder Replacement *1,cylinder removal tool*2, hexagonal*1, Fit most Short office chairs .

Specification: 7 Inches to 11 Inches Short Office Chair Cylinder Replacement, 4" Stroke, Adjust Heavy Duty Gas Lift Cylinder.

Material: This office chair lift cylinder is built with high-grade steel.

Features: This gas cylinder has a 2.4" (60mm) sinking depth, with a compressed height of 7.5" (190mm) and fully extends to 11.2" (284mm). 

 Fit most Short office chairs including Herman Miller Sayl&Setu,Steelcase Gesture&Series, Haworth Zody&Soji, Knoll Rush and more, Not compatible with IKEA and select other brands.

Designed for maximum durability, it supports up to 1000 lbs, ensuring long-lasting performance for demanding workspaces.

What’s in the package: 4" Stroke Short Office Chair lift Cylinder Replacement *1