Magnet None Mounting B (Through Hole [Standard 12 through 63 Bore])-Bore Size 16mm Port Thread Type Rc: 32-100 Bore M Thread 12 to 25 Bore-Stroke 15 Body Option M (Rod End Male Thread) Auto Switch Groove None (for 12-25 Bore w/o Magnet) 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 Rod End Options None