When it comes to floor jacks, there are two main types: the jack stand, and the hydraulic jack. Which one you choose depends on what kind of work you’re doing. While you can use a jack stand to raise and support your car or truck, most technicians use a hydraulic jack. That’s because hydraulic jacks offer much more power, so they’re better for lifting heavier weights or getting underneath bigger vehicles. And if you’re working on a car that’s taller than 8 feet, you’ll want a hydraulic jack.