1,gas spring for all kinds of office chairs 2,chrome or powder coating are available 3,with high quality and best price Gas springItem: HY-100LIts stroke length is 100mm.Out tube length is 195mm.Total length is 351±2mm.(when it's Extended)1,Material: Steel2,Quality: Airproof and durable3,Chrome or Powder coating are all available4,The switch color can be changed as your request5,Packing: 20 pcs/ ...