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