1,This is locking gas spring ,widely used in modern sofa. 2 ... . Many series of gas spring, including cars spare parts, lift gas spring,,medical gas spring ,machinery gas spring and so on ... the parameters .specifications:Usage: Toyota automobile.Features: 1, Gas: Nitrogen filled inside. 2, Color : black,silver,or ... Not leak oil; Our paint is passed ROHS test; 4,When the gas spring is up and down, it's ...