Piping G (Centralized Piping Type) Bore Size 15mm Port Thread M Thread: Bore 6-15 Rc Bore 20-40 Stroke 200 Stopper Type Bumper Bolt (Resin Tipped) 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)