A pneumatic jack is a lifting device that uses compressed air to raise heavy objects. It operates by converting air pressure into mechanical force, allowing it to lift vehicles or machinery with ease. This type of jack is commonly used in automotive repair shops and construction sites due to its efficiency and speed. Pneumatic jacks come in various sizes and designs, including floor jacks and bottle jacks. They are often preferred over manual jacks because they require less physical effort and can lift heavier loads. Safety features, such as pressure relief valves, are typically included to prevent overloading.