Extended Length: 38.5cm / 15', Compressed Length: 23cm / 9.06'. The lift supports struts installation in the car to support the heavy cover. It can save your space when you need to repair your car. Made of quality material for long lasting use. High characteristic, stable performance. 100% Brand New. Easy to install with simple hand tools in just few minutes, no special tools required for installation. Note: Force 300N/67Lb Per Strut! The 4pcs struts suitable support weight is between 110 pounds and 150 pounds. The support weight could not exceeds 150 Pounds! Package Include: 4 x Lift Supports Struts, 8 x Mounting Brackets, 8 x Nuts