Magnet None Mounting B (Basic Style) Style A (Non-lube Air Cushion) Bore Size 20mm Thread Rc (M5 for Air Cushion 20 & 25 Bore) Seal Material V (FKM) Stroke 125 Auto Switch None 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)