A jack is a device to lift heavy loads or to apply great forces. ,what makes a jack work is simple leverage. this product has been made for personal car use not for commercial or professional purpose. That is why it has been made in portable segment (size, Length 43CM, Height 15CM, width 22CM, Weight 2Kg) you can easily adjust in your car boot . Important notification for SUV/Semi SUV Cars:- For These Segment, have to use a piece of wood or a strong piece of stone to increase the jack height when use the jack for your SUV/ Semi SUV cars. Because all SUV cars have extra ground clearance then hatchback and sedan cars.