Lifting Capacity: The "4-ton" designation means it can safely lift up to 8,000 pounds (approximately 3,628 kilograms). This high capacity makes it suitable for a wide range of vehicles, from sedans to larger, heavier vehicles.
Hydraulic System: The core of the jack's functionality is its hydraulic system. Pumping the handle forces hydraulic fluid into a cylinder, which pushes a piston and raises the lifting arm.
Low-Profile Design: Many 4-ton jacks are "low-profile," meaning they have a minimum height that allows them to slide under vehicles with limited ground clearance, such as sports cars.