Rennen means RACE in German. The patented Rennstand is revolutionary because it solves the problem of jacking and supporting in the right spot. It allows jacking and supporting using interchangeable jack pads designed for the vehicle. It’s easy, sets up in seconds and it is safer for the vehicle and the operator. It can be used with most floor/ trolley jacks. The first model (18M-RS2) is rated for 2 tons. Use with jacks that are up to 12 inches wide. (Most floor jacks) Rennstand can extend to more than 18 inches.