Bitspower's flow sensor with G1/4" female thread connections in matt black lets the coolant flow through the flow indicator and rotates the internal black paddle wheel. The speed determined in this way is read out via the 3-pin cable on the rear and displayed, for example, via the mainboard, as with a fan. In order to achieve a more precise indication, adapters can be attached to the inlet or outlet and thus reduce the inside diameter to 8 or by 5mm. Technical Data: Material: Brass Colour: Matt Black Thread: 2x G1/4" Flow Adapter: I.D. 5 mm/ I.D. 8 mm 3-Pin Cable: 600 mm