Magnet: D (Built-in Magnet), Mounting: B (Through-hole, Standard), Bore Size: 40mm, Port Thread: Rc: 32-100 Bore; M Thread 12 to 25 Bore, Stroke: 25mm, Body Option: Standard, Rod End Female Thread, Auto Switch Groove: None (for 12-25 Bore w/o Magnet; 32-100 Bore w/o Magnet Z must be selected), Auto Switch: F7NJ--Solid State, Heat Resistant, 2-color Indication, 3 Wire NPN, LED, Lead Wire or