1 x Extruder Tool. 1 Set Practical Extruder Extrusion Professional 3D Printer Extruder. 3 D 3D Printing Extruder Accessories Drive Plate Printer Parts Bowden Feeder. From the side where the heater block is fixed, use the tool to disassemble and replace the nozzle and the heating block.The nozzle can be easily and freely changed while the heater block is stationary.
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