The Bitspower NOTOS O120 120mm PWM 4-Pin ARGB Black Case Fan offers a maximum fan speed of 1800 RPM and features a sleek black design with addressable RGB fan light color. This 5-pack of high-quality case fans has a height of 25mm, making it perfect for cooling systems in computer cases. With a diameter of 120mm and a 4-pin power connection, these fans provide efficient and stylish cooling for your system.