... lift/gas cylinder/gas strutUseUsed for boss chair/ office chair/bar chair etc.QualityNANT Gas Spring have ... year warranty for the goods.TypeStroke for different kind of chairs.Boss chair: 60mm, 80mmOffice Chair: 100mm, 120mm, ... ., LtdIntroductionNANT Gas Spring is a manufacture in this office chair accessories line, we have been in production ... Welcome your inquiry anytime. gas cylinder for office chairs