1).High quanlity 2).Competitive pricing 3).With SGS,ROHS 4) 100,000 times Warranty 5)MOQ:500PCS 1,Many different specifications of ... you want ,pls let us know the parameters .specifications:Usage: tool box,machinery,shopping cart.Features: 1, Gas: Nitrogen filled inside. 2 ... is up and down, it's soomth opration without noise. 5,Safe and easy installation. 6,Resonable price, excellent quality,delivery ...