4PCS 12V DC Brushless Blower Fan 30x10mm with 2 Pin Connector - High Performance Cooling Fan for 3D Printers, Makerbot MK7/MK8, CPU Heat Sinks & Arduino Projects - Perfect for Hotend Extruder Cooling and Electronics Ventilation

This helps to prevent the heat from the nozzle traveling too far upwards. Without this fan, the filament could get soft above the heater block, which leads to extrusion issues and degradation of print quality. This is a DC 24V 0.06A cooling fan. Dimensions are 30mm x 30mm x 10 mm. Sufficient for use in 3D printing, operating speed is 6000 RPM. Equipped to properly cool your 3D printer’s extruder assembly, this extruder fan is compatible with the MakerBot Replicator 2 and MakerBot Replicator 2X. Also compatible with Flashforge, CTC, and other 3D printer types. Specification:Rated Voltage: DC 24VConsuming Current: 0.08AConnector: 2pin-ph2.5Speed: 6000 + -10% RPMAir Flow: 6.5 CFMStatic Pressure: 2.9Noise Level: 27dBANote: Any questions, you can contact us and we will give you a satisfied solution! Notice!!! Please check the fan plug, maybe the plug was wired opposite of the fan it was replacing, that is reverse polarity.