TRAC thrusters deliver more thrust per horsepower than any other thruster available. TRAC’s twin counterrotating propellers are more efficient and can reach higher horsepower than single prop thrusters. TRAC DC series stands in a class of its own. You will not find undersized propeller shafts, shear pins, light duty motors, inferior materials, or any other compromises in the DC TRAC. The DC TRAC is built with the same high standards of its higher horsepower hydraulic and AC electric counterparts.