SPD M12 to 1/8 NPT Metric Sensor Adapter (3 Sockets) SPD Sensor adapter is used as an adapter from M thread to NPT. This adapter has 3 sockets, which means that it can be used for several sensors at the same time. What makes the SPD Sensor Adapter unique is that it has both a male and female connection on each side so that it can be used in most situations. Specifications: Sensor socket:  3x 1/8 NPT Connector 1: M12x1.5 (Female) Connection 2: M12x1.5 (Male) Total length: 44mm Included: 1 x Tray 2 x NPT Plug 1 x sensor adapter