Features 1、Good Sealing: The gas spring has thickened double layer sealing rings, accurate hydraulic oil sealing without leakage. 2、Made of Spring Steel: Using excellent spring steel material, with thick seamless cylinder, not easy to rust and deform. 3、Low Friction: These gas springs have good surface finish, with low friction, and are not easy to damage parts during use. 4、For Support and Adjustment: Commonly used for support, braking and adjustment of beds, cabin doors, mechanical equipment, etc. 5、Standard Size: The gas shock struts have standard sizes, with a center distance of 540mm and a stroke of 230mm. Specification Item Type: Gas Spring Material: Spring steel Center Distance: Approx. 540mm / 21.3in Stroke: Approx. 230mm / 9.1in Bore Diameter: Approx. 22mm / 0.9in Rod Diameter: Approx. 10mm / 0.4in Package List 2 x Gas Spring