China 3D Printer E3d V5 J-Head Hot End Kit 12V/24V Bowden/Wade Long/Short-Distance with Mk8 Heating Block Cooling Fan Nozzle for 1.75/3.0mm Filament, Find details about China V5 J-Head, 3D Printer Extrusion Head from 3D Printer E3d V5 J-Head Hot End Kit 12V/24V Bowden/Wade Long/Short-Distance with Mk8 Heating Block Cooling Fan Nozzle for 1.75/3.0mm Filament