After-sales guarantee: each defective item can be replacement for free or refund.
If any question, please feel free to contact or QA us, BZ 3D is committed to providing you with the best service!

Packing List：

Dual Drive Extruder x1
Mounting Bracket x1

Descrition:

1: For the Stepper Motor Mounting Bracket, it is not guaranteed that all customers can 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

4: Note:For Mega/Vyper users,Please make sure to：
Invert the stepper motor in firmware or by swapping stepper cables to changing the direction of rotation.