1.Chair Parts: Gas Lift/Spring 2.Long ... lift/gas cylinder/gas strutUseUsed for boss chair/ office chair/bar chair etc.QualityNANT Gas Spring have good reputation ... for different kind of chairs.Boss chair: 60mm, 80mmOffice Chair: 100mm, 120mm, 140mm, 160mmBar Chair: 180mm, 200mm, 260mm, 330mmSampleAll ... Gas Spring is a manufacture in this office chair accessories line, we have been in production and ...