1: For the Stepper Motor Mounting Bracket, it is not guaranteed that all customers will use it.
If your printer has its own motor mounting bracket, you only need to use your own.

2: The internal filament feeding hole is small and precise. To ensure that the filament can be inserted smoothly,
you can screw the spring to the loosest position firstly and then tighten it when the filament is inserted.

3: The reference value of E-step is 385. Do an Estep calibration to get exact estep that fits your printer.

Package Included:
Dual Drive Bowden Extruder Universal Geared Extruder× 1