This stainless steel 5/16" fine thread driveshaft sensor is triggered by magnets and features a 3-pin Molex connector.. This speed sensor is commonly used to detect Drive Shaft RPM or Wheel RPM. This metal sensor has a 5/16" fine thread pitch and is triggered using magnets._x000D_ _x000D_ Sensor length is 1 inch. Sensor length is 1 inch.