1,This is controlled gas spring ,widely used in cabinet 2,100, ... times quality guarantee we are the leading manufacture of gas spring .We are looking forward to cooperate with you ... know the parameters .specifications:Usage: Toyota automobile.Features: 1, Gas: Nitrogen filled inside. 2, Color : black,silver,or as ... Our paint is passed ROHS test; 4,When the gas spring is up and down, it's soomth opration ...