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 100N/22.5Lb Per Strut! The 4pcs struts suitable support weight is between 34 pounds and 50 pounds. The support weight could not exceeds 50 Pounds! Package Include: 4 x Lift Supports Struts, 8 x Mounting Brackets, 8 x Nuts