Bore Size 40mm Port Type Rc (Or M5x0.8 for 12, 16 Bores) Stroke 25 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) Lube-retainers None or With lube-retainers on one side