Specifications Material: pure aluminiumColor: golden Product usage：3DprintPackage included 7 x metal accessories5 x hexagon screw1 x springFeatures -Precise and beautiful， with CNC numerical control machine tool processing and surface oxidation sandblasting.-Easy installation， feeding stability-Bring better proces after improving the post-treatment-New production， high cost performance-Power can be adjusted-The guarantee of high quality-Countersunk head screw， die spring persistent efforts-Fully furnished of the extruder but excluding the motor-Match with 42 stepper motor can be used directly-Suitable for 2*4mm Ptfe tube， 1.75mm filament