The CooLift propulsion assist and lift system from Magline helps operators push a loaded lift over rough terrain or inclines. A throttle interlock minimizes accidental activation of the propulsion system. The center drive wheels automatically return to free-wheel mode when the throttle is released. A microprocessor control system with encoder feedback provides smooth, quiet operation. Lifting capacity is up to 1,500 pounds. 800/624-5463; www.magliner.com.