The EZ Trac hydraulic driven axle system from Tuthill Drive Systems, designed for heavy-duty applications, is lightweight and produces an estimated 10% fuel savings vs. mechanical drive systems. The system has a mass of 1010 lb (458 kg) and requires no additional drive lines or transfer cases. It maintains factory chassis height, ride quality, and turning radius. The system can engage and disengage on the go, up to 20 mph (32 km/h). It is suitable for utility, concrete pumping, and service, or any truck used in less than ideal conditions.