The Tandem Master is a specially designed lift made for Tandem Axle Trailers. In the event of a flat tire, simply ride the good tire up onto the Jiffy Jack and raise the flat tire for an easy, safe, and fast change. Jiffy Jacks are so stable that you rarely even need to unload horses or other livestock from trailers to change tires. Jiffy Jacks have design features to prevent slipping or sinking into the ground. Safe and easy to use, they are lightweight, strong and durable.