Putting your vehicle on a dolly has never been easier, you need to watch the video below. Position the two arms on the front and back of the tire tread. Lock in the square tube. Hook in the swing casters. Jack up the car with your floor jack under the square tube until the swing casters are in the proper position. Lock in the swing casters with the pin. No need to crawl under the car to find the proper jacking positions. No need to jack the car high enough to extend the suspension and get the wheel off the ground. This new dolly picks the vehicle up by the tire with a simple patented design made in the USA.