Atoplee 1pc Mini 12V 404010mm Cooling Fan 5000rbm for Reprap 3D Printer Extruder Parts Material: ABS Rotation speed: 5000rbm Net weight: approx 17g ;Working voltage: DC 12V Item size: approx 40*40*10mm; Wire length: approx 29cm Using ambient temperature: -20 to 75; Working ambient temperature: 40