Office Chair Cylinder Replacement: 9 to 13, 4 Stroke, Heavy Duty 1000 lbs, Universal Fit, Class 4

About this item

• 🏆【Adjustable Height 4 inches】The compressed length is 9.88 inches (251mm), the fully expanded length is 13.6 inches (346mm), sinking length is 1/2” (15mm), Stroke Length is 3.7 inches, which allows your chairs to rise higher. (Note: Please measure the length of the outer cylinder before purchase).
• 🏆【Guaranteed Satisfaction】If you encounter any problems with using our chair shock replacement, please contact us without delay. We are ready to assist, provide replacements, or issue refunds based on your situation. Your contentment is what matters most to us.
• 🏆【Universal Fit Size for Most Chairs】The outer column cylinder diameter connected to the base is 2 inches (50mm), and the piston shaft diameter connected to the chair is 1-1/8" (28mm). This pneumatic piston cylinder will fit almost every office chair on the market including herman miller aeron. Please confirm these measurements before making a purchase. Not compatiable with 1KEA and some other brands.
• 🏆【Eliminate Sinking Concerns】Prevent sinking issues by removing the old cylinder using a hammer or wrench. Simply assemble our new cylinder into the base and attach the seat. Our office chair lift provides seamless 360-degree rotation.
• 🏆【Upgraded Class 4 Gas Cylinder】Mastery Mart's office chair cylinder replacement is made of premium steel. This heavy-duty gas lift cylinder is manufactured to meet the highest industry standard (BIFMA/ANSI), the lift has a maximum capacity of up to 1000 LBs.