Assembled 3D Printer GT4 Extruder With Metal J-head<br>Specifications:<br>Material: Plastic &amp;amp; aluminum alloyNozzle diameter: 0.3， 0.35， 0.4 &amp;amp; 0.5mm (optional)Suitable filament: PLA &amp;amp; ABS (1.75mm\/3mm)Nozzle temperature: 180\u2103-200\u2103 for PLA; 220\u2103-250\u2103 for ABSPrinting resolution: 0.1mmMolding form: FDMPrinting thickness: 0.1mm-0.3mmFlow rate in nozzle: About 24cc\/hMovement speed: 50ccRecommended Voltage for heater: 12V 2.5AThermistor: 100K 1% high-precision NTC thermistorDimensions: 115 x 75 x 146 mm (L \/ W \/ H)Wheelbase of the support shaft: 45mmWeight: 565g<br>Note: The wheelbase of the support shaft of GT 4 is 45mm， which is fit to Prusa Mendel I3， make sure it fits your machine before placing an order.<br>Package included:<br>1 x GT4 extruder