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 Included:
1 x Titan Extruder
1 x Mount Bracket
2 x Wrench
This Kit NOT Included Stepper Motor
Quick Start for Ender 3 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.