gas spring,chair gas spring,office chair gas spring,gas cylinder,gas strut gas spring,chair gas spring,office chair gas spring,gas lift,gas cylinder,gas strut 1. Stroke option (mm): 65/85 / 100 / 120 / 140 / 160 / 180 / 200 / 260mm,etc.2 ... 3/class 4)6. General use: office chair/ furniture chair/ bar stool/ Executive Chair/ Lift Chair/ Leisure chair for home furniture7. Pressure (N):300--450,the ...