Magnet D (Switch Unit) Mounting B (Basic) Standard Shaft Type W (Double Shaft with Single Flat) Angle Adjusting Unit U (Angle Adjuster) Size 20 Rotation Angle - Vane 90S (Angle: 90 Single Vane) Port Side 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)