• 2" wide x 6.5" tall (50mm x 185mm) main support tube that will fit most chair bases (larger diameter black tube)
• 3" (80mm) piston stroke adjustment range (up & down) 
• 11.1" (307mm) total overall extended length (top to bottom)
• Ideal to replace extra short gas cylinders on many office chairs and executive chairs
• ***Note: this is a specialty cylinder. Before ordering, be sure you have at least 4" of clearance under the bottom of your chair base.***
• Black