Bore Size 20mm Opening & Closing Stroke Short Stroke Body Option Axial Direction Ported 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) Option X83 (With an Adjustable Opening/Closed Finger Positioning) Stroke Adjustable Side A (Both Sides) Stroke Adjustable Width 2 (Long Adjuster)