Sturdy&Heavy duty: This gas lift cylinder is made of thicker alloy steel, engraved with the mark of SGS inspection, the quality is reliable. ,Used high quality materials & thickened outer Steel,these gas cylinder are of true high quality and durability, weight capacity: 450 LBS. Universal size:6.5" Long Stroke gas lift outer cylinder: 2.0 inches, inner cylinder: 1.1 inches. Applicable for 2 inches (50mm) diameter center hole base,suitable for most drafting chairs stools,office & salon chairs stools, executive chairs, task chair, rolling stool, saddle stool. .( Please measure dimensions before you purchase it ) Adjustable height: The height of the gas lift cylinder fully compressed is: 11.5 ", and the height fully expanded is: 17.8". This means that it has an 6.3-inch adjustable height that allows you to rise higher and use your office chair in more scenarios. Easy to install: only 5 minute to install. Usually you may need to use a hammer to take out the old gas lift cylinder from chair base and replace it with a new one & handle with 400lbs capacity ★2Year Hassle-Free Warranty - Our goal is to provide you with the highest quality office chair parts so you can extend the life of your chair. So if for some reason our cylinder fails, leaks, or starts sinking - email us, and we'll send you a brand new one. Our warranty lasts for up to 2 years from your purchase date. Office Chair Gas Cylinder Replacement. Premium Replacement Gas Cylinder (Universal Fit)💰 SAVE BIG – Repair Instead of ReplaceIs your office chair sinking or unstable? Avoid costly replacements—our high-quality gas lift cylinder restores your chair’s original height and stability. Backed by our 30-day money-back guarantee and 2-year warranty, this is a risk-free solution to extend your chair’s life.✅ UNIVERSAL COMPATIBILITYFits most standard office chairs & stools (including popular brands).Height Range: Extends 2–4 inches taller than standard cylinders (check your old cylinder’s specs for best match).Diameter: [Insert common diameters, e.g., "1.5"–1.95" (38–50mm)" if known; otherwise state: "Check your current cylinder’s base diameter"].Not sure if it fits? Measure your existing cylinder’s height (extended/retracted) and base diameter. No-hassle returns if it doesn’t fit your chair.🔍 HOW TO CHOOSE THE RIGHT CYLINDER?Measure Your Current Cylinder:Extended Height (from floor to seat mount).Retracted Height (lowest possible position).Base Diameter (usually 1.5"–2" / 38–50mm).Why Our Cylinder?Durable Construction: Heavy-duty materials for long-term use.Smooth Operation: Precision-engineered for effortless height adjustment.Extra Height: 2–4 inches taller than standard cylinders (ideal for taller users).⚠️ TIP: Always verify your chair’s mounting plate compatibility (standard 5-hole or other designs). Most universal plates are included, but exceptions may apply. Exceptional Dimensions for Optimal Use Our telescopic cylinder is meticulously crafted with precision dimensions to meet your diverse needs. With an overall height of 11.5 inches, it offers substantial reach for various applications. The top - most part features a small red component that stands out, not only as a visual marker but also for its functional significance in certain setups. The height from the bottom of the red top - component to the upper edge of the main cylindrical body is precisely 2 inches. This carefully designed dimension ensures proper alignment and connection with other parts in your assembly. The main cylindrical section itself has a height of 9.7 inches, providing a robust and stable structure. When it comes to its extension capabilities, this cylinder truly shines. It can extend up to 6.3 inches, allowing for flexible operation in tasks that require adjustable lengths. Whether you are using it in automotive, furniture, or industrial machinery applications, this extension length gives you the versatility you need.