This product adopts high-quality aluminum alloy heat radiator and brass nozzle with stainless steel pipe as feeding pipe which ensures good heat insulation effect and prevents blockage. Its surface is covered with anodic oxide coating which can resist oxidation corrosion and increase nozzle hardness and surface area of heat radiator. Besides the cooling fan directly faces to operation area. All such special designs ensure better heat insulation as well as finer and more stable printing. Features: Material: All metal Weight: 105g Outline dimensions: 43 x 5 x 60mm (L/W/H) Nozzle diameter:0.30.4 & 0.5mm optional Nozzle temperature: 180~260'C Suitable for 1.75mm/3mm PLA & ABS Printing resolution: 0.1mm Molding form: FDM Printing thickness: 0.1mm~0.3mm Flow rate in nozzle: about 24cc/h Movement speed: 50cc Recommended input voltage: 12V Stepper motor operating voltage:12V Cooling fan operating voltage:12V Heating voltage of extruding head: 12V Thermistor:100K 1% high-precision NTC thermistor Assembled with 40 x 40 x 15mm 12VDC cooler fan