1.Gas Spring,Lift,Cylinder,Strut for Chair,Table 2.Black ,chrome Surface ... Products NameGas spring/gas lift/gas cylinder/gas strutUseUsed for boss chair/ office chair/bar chair etc.QualityNANT ... quality and good service. 5 year warranty for the goods.TypeStroke for different kind of chairs.Boss chair: 60mm, ... , we have been in production and export business for many years, now we have client from Europe, ...