Creality 3D Printer Sprite Extruder Pro Kit DIY Gear Ratio 3.5:1 Direct Drive Extruder All Metal Hotend Structure Large Torque 300℃ High Temperature for TPU/PLA/ABS/PETG Suitable for Ender-3/Ender-3 Pro/Ender-3 Max/Ender-3 V2 3D Printers Upgraded Accessory