Scissor car jacks are based on a timeless concept that uses a scissor mechanism that expands and contracts to lift the vehicle. Made from durable steel, scissor jacks are compact and lightweight, making them easy to store. For this reason, they come standard with many vehicles. The scissor arms that raise the vehicle are powered by a lever turned screw. Although these jacks require a bit more manual labor compared to hydraulic models, they can be depended on for essential tasks like flat tire changes. Their ease of use along with low price and weight makes these jacks popular among vehicle owners.