Magnet D (Built-in Magnet) Series J2K Mounting B (Basic) Bore Size 16mm Stroke 40 Head Cover Port Location Perpendicular to Axis Auto Switch No Switch Lead Wire or Prewired Connector 0.5m (Or None in the Case of No Switch) Number 2 pcs. (Or None in the Case of No Switch) Auto Switch Mounting Type B (Band Mounting)