Replacement Chrome Gas Lift Pneumatic Cylinder - Medium Drafting Stool Height - S6132 2" (50mm) wide x 12.4" (315mm) tall chrome support tube column (larger diameter chrome tube) will fit most chair and stool bases 8" piston stroke adjustment range (up & down) 22.25" (565mm) total overall extended length Chrome support column Ideal to replace gas lift cylinders on most tall task chairs, drafting chairs, and stools, including those purchased at office supply stores.