This optional 3-ton capacity jack platform offers the ultimate in jacking speed and convenience. The exclusive telescoping design allows the runways to be adjusted for different tread widths. Perfect for wheel and suspension work. For use on four-post lifts, lube racks or quick lube pits. For use on four-post lifts, lube racks or quick lube pits 3-ton capacity Heavy-duty steel construction Low profile design Overall height: 3in. Collapsed width: 31in. Extended width: 49in. Width of channel: 6 1/2in.