The ESCO 90521 3 Ton Pro Series Low Profile Floor Trolley Jack is designed for professional and DIY use. This is a professional grade floor jack with a double piston pump designed for safe and precise lifting of cars, trucks and vans. Features a unique “lift & twist” controlled lowering system with a 2-speed action release that allows for the user to lower the vehicle with absolute precision and controlled speed. The double pump design also allows you to raise the jack much quicker by utilizing the foot pedal lifting system or traditional handle pump lifting. Other features include a built-in tools and parts tray for convenience in storing parts/tools and strong nylon wheels that will withstand constant use and will not damage finished shop or garage floors.