Feature: Force: 66lbs/294N(Per Strut) . It could hold open 66 lbs individually on any object such as a car lid, RV, which is universal. Note: Do not compress them by hand before installation, the struts could only be compressed after installing successfully. After installation, the lid/cover would be opened or closed smoothly. Working temperature: -25 Degree Celsius—70 Degree Celsius. Speed Adjustment of Slow Close: According to your needs, the soft closing speed of the gas shock lift supports can be adjusted. Specification: Material: Metal Color: Red, Silver Tone Pressure: 294N/66Lbs (30Kg) Extended Length: 33cm / 13" Compressed Length: 19.5cm / 7.68" Total Length: 34.5cm / 13.58" Rod Length: 12.5cm / 4.92" Housing Diameter: 15mm / 0.59" Connecting Rod Diameter: 6mm / 0.24" Installation Hole Size: 10x6mm / 0.39"x0.24"(L*W) Screw Diameter: 3mm / 0.12" Package Included: 1 x Gas Struts Some Installation Tools