Features： 1、There is an inflation port at the bottom of the nitrogen gas spring cylinder, which can be used for micro pipe connection system. 2、There is standard C shape notch in the cylinder upper, together with the bottom screw hole, can provide various installation possibilities. 3、The end force of the gas spring is 2800N, the initial force is 1700N, and the stroke is long, which is practical. 4、After the special process of fine processing, the hardness is high, and the surface roughness reaches about Ra0.02um. 5、Made of alloy material and adopts integral cutting and forming process, which is safer and more reliable than pipe welding. Specification： Item Type: Nitrogen Gas Spring Material: Alloy Purpose: Die compression nitrogen cylinder Cylinder Diameter: Approx. 19mm / 0.7in Plunger Diameter: Approx. 11mm / 0.4in Package List： 1 x Nitrogen Gas Spring 1 x Storage Box