Magnet: Built-in, Mounting: Basic, Bore Size: 1 1/2", Stroke A: 2", Cushion A: Both Ends, Rod Boot A: None, Stroke B: 2", Cushion B: Both Ends, Rod Boot B: None, Auto Switch: A56--Reed, DC Volt<5, LED, Lead Wire or Prewired Connector: 0.5m (Or None in the Case of No Switch), Number: 3 pcs., Dual, Tandem Option: Dual Op., Sgl. Rod