1/2″ diameter smooth bore Hall effect crank sensor. This sensor is directly interchangeable with the standard 1/2″ magnetic crank sensor. This sensor can be used on any Hall effect-compatible Electromotive systems and will work on trigger wheels 3″ or larger. Hall effect crank sensors can often be used to address noise related starting/running issues, as they tend to be less susceptible to interference. Sensors have necessary pull-up resistor in place.