Magnet: Built-in, Mounting: Basic, Bore Size: 1 1/2", Stroke A: 3", Cushion A: Both Ends, Rod Boot A: None, Stroke B: 3", Cushion B: Both Ends, Rod Boot B: None, Auto Switch: A54--Reed, DC Volt >5<24, AC Volt <200, LED, Lead Wire or Prewired Connector: 3m Lead Wire, Number: 2 pcs. (Or None in the Case of No Switch), Dual, Tandem Option: Dual Op., Sgl. Rod