THESE ARE HIGH QUALITY MILITARY GRADE MOTOR WITH GEARBOX. THE MOTOR RUNS ON 28 VOLTS . IT CAN RUN FROM 3 VOLTS TO 28 VOLTS WITH A REASONABLE TORQUE. THE GEARBOX ARE ALL METAL AND THE BEARINGS ARE MILITARY GRADE SUPER SMOOTH. THE MOTOR IS MADE BY MUIRHEAD VACTRIC UK. THE UNIT HAS A RPM OF 83 AT 20 VOLTS.
