Aerocool Dark Force 8cm, Fan, 8 cm, 1800 RPM, Black Aerocool Dark Force 8cm. Type: Fan, Fan diameter: 8 cm, Rotational speed (max): 1800 RPM, Maximum air pressure: 1.32 mmH2O. Voltage: 12 V. Width: 80 mm, Depth: 25 mm, Height: 80 mm. Product colour: Black