Magnet D (Built-in) Mounting B (Through Hole [Standard 12 through 63 Bore])-Bore Size 63mm Port Thread Type TF (G 32-63 Bore) Stroke 40 Body Option M (Rod End Male Thread) Auto Switch Groove Z (Auto Switch Mounting Grooves) 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