Aerocool Dark Force 12cm, Fan, 12 cm, 1200 RPM, Black Aerocool Dark Force 12cm. Type: Fan, Fan diameter: 12 cm, Rotational speed (max): 1200 RPM, Maximum air pressure: 1.32 mmH2O. Voltage: 12 V. Width: 120 mm, Depth: 25 mm, Height: 120 mm. Product colour: Black