Check the listing for details. Heavy Duty Stool Height Gas Lift Pneumatic Cylinder -10" Travel / Stroke. Condition: New. Listed at 54.99 USD. Premium Quality Replacement Heavy Duty Stool Height Gas Lift Cylinder This heavy duty stool height gas lift cylinder is a full stool height cylinder and is the tallest cylinder that we sell. It has 10" of travel / stroke to enable the user to find the height that's just right for their drafting height stool. The black support cylinder column and piston sizes are common among most manufacturers, so they should fit into most standard chair and stool bases & top control mechanisms, especially those sold at office supply stores like Staples, Office Max, Office Depot, etc. Heavy Duty - Built to withstand more weight and pressure than standard gas cylinders. Cylinder Dimensions: Black center support column: 2" wide x 14.5" tall (50mm x 370mm)Piston stroke / travel adjustment range (up & down): 10" (270mm)Overall length from top to bottom when fully extended: 28" (708mm)Black