Whether your current cylinder has lost its ability to hold height settings, making your chair sink during use, or you're looking to convert your standard office chair into a drafting stool for elevated work surfaces, this premium replacement cylinder delivers reliable performance and extended durability.

• Authentic Class 4 Quality: The highest tier of gas cylinder technology, ensuring maximum durability and performance in demanding environments.
  
  
• Heavy-Duty Weight Capacity: Supports up to 120 kg (265 lbs) with reinforced construction for reliable height adjustment, even during extended use.
  
  
• Premium KGS Manufacturing: Crafted by Alesfing, a renowned Korean manufacturer, each cylinder passes rigorous BIFMA and SGS safety tests, including over 100,000 cycles of use.
  
  
• Cable-Activated Design: Designed for seamless integration with Herman Miller Aeron chairs, ensuring proper functionality with the existing pneumatic system.
  
  
• Universal Compatibility: Standard 2-inch (50mm) outer diameter fits 99% of office chair bases, including top brands like Herman Miller and Steelcase.
  
  
• Smooth, Quiet Operation: Provides whisper-quiet height adjustment and stable positioning without sudden drops.
  
  
• Drafting Stool Conversion Ready: Extended height allows conversion to a drafting chair, ideal for standing desks or elevated work surfaces, with an optional drafting ring for added comfort.
  
  

Restore full height adjustment functionality to your premium office chair with this authentic Class 4 replacement gas cylinder. Specifically engineered for compatibility with Herman Miller Aeron (cable-activated version), Mirra, Embody, Setu, Sayl, Steelcase Think, Steelcase Leap, and Knoll Life chairs.