Note: ★After-sales guarantee: each defective item can be replacement for free or refund. If any question, please feel free to contact or QA us, GBA-SZC is committed to providing you with the best service! ★If you want to upgrade the CR10 or Ender 3 series,you need to do some modifications,the stepper mount comes with the package does NOT fit . Filament: 1.75mm Material: Injection molding plastic Driving Gear Diameter: 12mm Driven Gear Diameter: 8mm Transmission Ratio: 3:1 Package List: 1 * Extruder kits 1 * Mount Bracket 2 * Wrench This Kit NOT Included Stepper Motor Quick Start for Ender3 and CR10 Users: 1. Print a stepper motor mount 2. Invert the stepper motor in firmware or by swapping stepper cables. 3.Change the E-steps value, around 385 is recommended.
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