Magnet Type: P1 (Built-in Strong Magnet w/Magnetic Field Resistant Auto Switch), Clevis: A (16.5mm), Bore: 40mm, Thread: Rc1/4, Stroke: 100mm, End Bracket: YA (Double Knuckle Joint, M6 w/Tap), Option: None, Auto Switch: P74--Reed, DC Volt, AC Volt, High Magnetic Field Resistant, 2 Wire