Name:Gas spring/gas lift/gas cylinder/gas strutColor:Outer tube color: Powder coating & Chrome Button color: White, Black, Orange, Green etc.Standard:Class 1:medium tube thickness 1.2mm(better quality)Class 2:medium tube thickness 1.5mm(much better quality)Class 3:medium tube thickness 2.0mm(best quality with reasonable price)Pressure:350-550NStroke:40/65/85/100/120/140/160/200/260Material:IronBrand:FENGYIType:Stroke for different kind of chairs.Boss chair: 60mm, 80mmOffice Chair: 100mm, 120mm, 140mm, 160mmBar Chair: 180mm, 200mm, 260mm, 330mmMOQ:500 piecesCertification:SGS,BIFMA5.1-2002 SGS standard,ISO9001 certificationTrade terms:FOB SHUNDE or C&F price if you needName:Gas spring/gas lift/gas cylinder/gas strutColor:Outer tube color: Powder coating & Chrome Button color: White, Black, Orange, Green etc.Standard:Class 1:medium tube thickness 1.2mm(better quality)Class 2:medium tube thickness 1.5mm(much better quality)Class 3:medium tube thickness 2.0mm(best quality with reasonable price)Pressure:350-550NStroke:40/65/85/100/120/140/160/200/260Material:IronBrand:FENGYIType:Stroke for different kind of chairs.Boss chair: 60mm, 80mmOffice Chair: 100mm, 120mm, 140mm, 160mmBar Chair: 180mm, 200mm, 260mm, 330mmMOQ:500 piecesCertification:SGS,BIFMA5.1-2002 SGS standard,ISO9001 certificationTrade terms:FOB SHUNDE or C&F price if you needName:Gas spring/gas lift/gas cylinder/gas strutColor:Outer tube color: Powder coating & Chrome Button color: White, Black, Orange, Green etc.Standard:Class 1:medium tube thickness 1.2mm(better quality)Class 2:medium tube thickness 1.5mm(much better quality)Class 3:medium tube thickness 2.0mm(best quality with reasonable price)Pressure:350-550NStroke:40/65/85/100/120/140/160/200/260Material:IronBrand:FENGYIType:Stroke for different kind of chairs.Boss chair: 60mm, 80mmOffice Chair: 100mm, 120mm, 140mm, 160mmBar Chair: 180mm, 200mm, 260mm, 330mmMOQ:500 piecesCertification:SGS,BIFMA5.1-2002 SGS standard,ISO9001 certificationTrade terms:FOB SHUNDE or C&F price if you need