Magnet D (Built-in) Mounting B (Through Hole) Bore Size 40mm Thread M5x0.8 (20-25 Bore) Rc (32-100 Bore)-Stroke 75mm Body Option Standard Locking Direction B (Retracting Stroke Lock) 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)