A replacement 40×40 Blower Fanduct Fan that cools down the filament that is passing through the hotend of your 3D printer so it doesnt become too liquidated and decrease the print quality. This fan will keep the temperatures of your filament at a perfect level to give you optimal results with your Zaxe Z3 and X3 3D Printers.
The Comprehensive Guide
to Comparing 3D Filament
Free Download