Magnet D (Built-in) Mounting B (Through Hole, Both Ends Tapped) Bore Size 16mm Lube-retainer Without Stable Lubrication Function Stroke 25mm Option M (Rod End Male Thread) 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) Dust Resistant None