Black Plastic Brushless 50 x 50 x 10mm/ 1.97" x 1.97" x 0.39" (L*W*H) DC 12V 0.1A Square Cooling Fan Cooler. Provides excellent air ventilation for your PC Computer Case, CPU Cooler, VGA Cooler and other matched radiator. The product provide large air volume, large wind pressure, low noise, long life,even better stabilisation, precision and durability. DC 12V 0.1A powered with 2.5mm pitch 2 pins connector easy to be connected with your computer motherboard or 3D printer power system. Life Expectancy:Sleeve Bearing 30000hr; Sleeve Bearing ensure quiet and move the air well.