1.75mm filament Extruder for 3D Printer Kossel Mini Delta Bowden RepRap NEMA17Extruder 3D Printer Advantages:1， Anew production， the price is right2， Quality assurance， the intensity can be adjusted， Shen head screws， die springs persistent efforts3， Excluding motor extruder equipped， buy home improvement 42 stepper motors can be used directlyNote: This package does not include motorPackage contains:1 x Alloy Extruder Kit， fit 1.75mm filament (stepper motor not included)