Gas Spring Pneumatic Stay - 15 kg/33 lbsGas Springs provide smooth, silent, and reliable motion that metal springs or friction stays can't match. These stays work for both up and down moving lids and are simple to install. Just attach the mounting brackets to the case and lid separately, and snap the stay on. Rated by closing force in pounds, its important to choose the right stay for your project, as excessive force may hinder proper lid closure. For lids wider than 36", we suggest using