we can supply Gas spring dampers Here are brief introduction of our company: Leading Manufacturer of gas springs and springs based in China, supply cabinet gas spring, bed support gas spring, lockabe gas spring ,Car supporting gas springs ,disc spring ,die spring,coil springs,etc. 1Application:it can move together with the parts of machinery or other device ,and when the parts not work, the damper will work as the part and prevend dangers. 2:Theory:the damper can be pulled easy ,but it need force to push the dampers.(the force accroding to your requirements) 3:Dimensions: 3.1:Cylinder Diameter:22mm or 26mm or 28mm 3.2: Rod Diameter: 10mm or 12mm 3.3:push speed : 10mm/s to 60mm/s