TUV Black Class 4 Gas Spring Chair/Gas Spring/Gas Cylinder

Product Description                                        Standard DescriptionClass is different from the thickness of medium&outer tube.Class1      1.2mm thickness  3 years warrantyClass2      1.5mm thickness  3 years warrantyClass3      2.0mm thickness  5 years warrantyClass4      2.5mm thickness  5 years warrantyApplication and FeaturesGas spring, gas lift, gas piston, gas cylinder, gas strut for all kinds chairsBoss chair gas spring: 40mm, 60mm, 80mmOffice chair gas spring: 100mm, 120mm, 140mmBar chair gas spring: 160mm, 180mm, 200mm, 260mm, 330mm   /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1