The hybrid stepper motor is a combination of the features of the variable reluctance stepper motor and permanent magnet stepper motor. In the center of the rotor, an axial permanent magnet is provided. The hybrid stepper motor is a combination of the features of the variable reluctance stepper motor and permanent magnet stepper motor. In the center of the rotor, an axial permanent magnet is provided. The length of the step is smaller. It has greater torque and provides detent torque with the de-energized windings. http://www.dtdmotion.com/hybrid-stepper-motor/