Magnet: Built-in, Mounting: Single Clevis, Bore Size: 1 1/4", Stroke A: 1", Stroke B: 5", Auto Switch: B54--Reed, DC Volt >5 <24, AC Volt <200, LED, Lead Wire or Prewired Connector: 3m, Number: 2 pcs. (Or None in the Case of No Switch), Stroke Options: Dual Stroke, Single Rod