The Sumi-Jack Heavy Machinery Moving Device combines a hydraulic toe jack with a unique Walking Foot Motion that allows the operator to lift and move heavy machinery. Sumi-Jack will operate outdoors on firm gravel surfaces or indoors and in tight quarters. The Walking Foot Motion allows the machine to be moved in any direction, in inch-worm fashion. Rubber belting on the underside of the foot provides good traction and will not mark the floor. Travel speed is from 1/2 to 2 feet per minute, depending on how much jockeying around is necessary. Five ton lift capacity. Available on ebay.com http://www.ebay.com/itm/Sumi-Jack-toe...