we can supply Locking gas spring Here are brief introduction of our company: Leading Manufacturer of gas springs based in China, supply cabinet gas spring, bed support gas spring, lockabe gas spring ,Car supporting gas springs etc. Free custom made locking gas spring sample before order within 7 days. S: means stroke length F1:means Extension Force Tube:means Tube diameter Rod:means Rod diater 1.1 S(0mm-550mm) 1.2 F1(150N-1150N) 1.3:Tube 22mm 1.4 Rod 10 mm 2.1 S(0mm-500mm) 2.2 F1(500N-2100N) 2.3:Tube 26mm 2.4 Rod 10 mm