1,gas springs for sports equipment have high quality and competitive price 2,apply for bed ,cabinet,chair Fully damped springs contain separator ... us know the parameters .specifications:Usage: Toyota automobile.Features: 1, Gas: Nitrogen filled inside. 2, Color : black,silver,or as ... request. 3,Quality: We can provide fatigue test report. Our products can open and close 100,000 times, Not leak oil ...