we can supply Free custom made locking gas springs 7 days Here are brief introduction of our company: Mainly Manufacturer of gas springs based in China, supply cabinet gas spring, bed support gas spring, lockabe gas spring ,Car support gas spring etc. Free custom made sample within 7 days. Custom made gas springs exactly as your drawing or yours sample.Locking gas spring,or compression gas spring,dampers etc. 1) Cylinder diameter 2)Rod diameter 3)Extended Length 4) Force 5) extended speed 6)Locking force .7)Piston Length . Iso 9001,within 7 days.