MASTERY MART Office Chair Gas Cylinder Replacement Kit, 4" Stroke Heavy Duty Hydraulic Pneumatic Piston, 1000 lbs Capacity, Universal Fit for Desk

MASTERY MART Office Chair Gas Cylinder Replacement Kit, 4" Stroke Heavy Duty Hydraulic Pneumatic Piston, 1000 lbs Capacity, Universal Fit for Desk

★ Correct Size & Universal Fit – Outer cylinder diameter 2" (50mm), inner piston diameter 1" (28mm), minimum length 10" (246mm), maximum length 14" (346mm) with a 4" (100mm) adjustable stroke. Fits 99% of office and gaming chairs, including Herman Miller, Steelcase, Secretlab and more. ★ Heavy Duty Class 4 Hydraulic Lift – Built with reinforced steel for maximum durability. Supports up to 1000 lbs, ensuring stable, safe, and long‑lasting performance without sinking. ★ Easy Installation Kit Included – Comes with removal tool, protective gloves, and step‑by‑step instructions. Even first‑time users can swap the old cylinder and install the new one without special equipment. ★ Fix Your Sinking Chair in Minutes – Replace your broken or leaking office chair gas cylinder and restore full height adjustability. Stop struggling with chairs that keep sliding down. ★ Save Money & Guaranteed Support – Extend the life of your chair at a fraction of the cost of buying new. Backed by lifetime warranty and responsive customer service – if your cylinder leaks or sinks, we’ll replace it for free. MASTERY MART Office Chair Gas Cylinder Replacement Kit, 4" Stroke Heavy Duty Hydraulic Pneumatic Piston, 1000 lbs Capacity, Universal Fit for Desk Chairs, Easy Installation with Removal Tool & Gloves