Descriptions This is a Dual Extruder which can be used on 3D printers like Mendel Prusa Makerbot and Printrboard and others The two print heads are conjoined with a piece of high hardness aluminum bar with good heat dispersion and high reliability The main benefits of this Dual Extruder includes being able to print more complex objects with support structures and more aesthetically pleasing objects that feature multiple colors or multiple materials The possibilities are only limited by your imagination Specifications Nozzle size 0 3mm 0 35mm 0 4mm 0 5mm optional Filament 1 75mm or 3mm PLA ABS optional Flow rate of nozzle About 24cc h Sports shaft speed 40mm s Voltage of heating nozzle 12V Thermistor 100K NTC Operating voltage of cooling fan 12V Heating rods 6mm 12V 30W Normal working temperature 190 230 Cooling Fan 40X 40 X 15mm 12V Heat sink 40 x 40 x 11mm Colored surface anodic oxidation Package includes 1 x MK8 Dual Extruder Kit