... your desire and it's very convenient and safe to use it .if you want ,pls let us ... :Usage: mechinery,tool box ,light box.Features: 1, Gas: Nitrogen filled inside. 2, Color : black,silver,or as clients request ... soomth opration without noise. 5,Safe and easy installation. 6,Resonable price, excellent quality,delivery soon,good service. ... : We can accept your appionted forwarder. coil Spring for furniture