1,This is controlled gas spring ,widely used in cabinet 2,100,000 times quality guarantee we are the leading manufacture of gas spring .We are ... us know the parameters .specifications:Usage: Toyota automobile.Features: 1, Gas: Nitrogen filled inside. 2, Color : black,silver,or as clients ... oil; Our paint is passed ROHS test; 4,When the gas spring is up and down, it's soomth opration without noise ...