Assembled J-Head V2.0 GT9 Extruder Head 0.3-0.5mm Nozzle Kit For 3D Printer<br>Specifications:<br>Applicable materials: Available 3mm\/1.75mmPLA and ABS (not included)Printing precision: 0.1mmMaterial: MetalWeight: 525gVoltage: 12VNozzle temperature :180 C-260 CNozzle flow rate: about 24cc \/ hMolding method: FDM melt laminatingSize: 85 x 53 x 119mmExtrusion nozzle: 0.3mm， 0.35mm， 0.4mm， 0.5mmThermistors: 100K1% precision NTC thermistorsMovement speed: 50cc<br>Component:<br>1. 42 Stepper motor:2 PhaseWeight: 0.4kgStep Angle: 1.8&amp;plusmn;5% degreeVoltage: 12V DCCurrent: 12A \/ phaseHolding torque: 48N.cm Min.Phase Resistance: 10.0&amp;plusmn;10% &amp;Omega;(phase)Phase Inductance: 20&amp;plusmn;20%mH(phase)Rotor torque: 68g.cm^2Braking torque: 2.6N.cm MAX.Insulation class: B(130)Dimension: 42.3 x 42.3 x 40mmPlumbum: AWG26 UL1007With 4pin cable<br>2. Cooling fan:Dimensions: 40 x 40 x 15 mm (3Pin)Voltage: 12V DCCurrent: 0.11ASmall size full of energy to make your printer pretty cool.<br>3. J-head nozzle:12V thermocoupleThermistor: 100K 1% high-precision NTC thermistorSuitable for 1.75mm， 3mm filament ABS \/ PLA (not included)Nozzle: 0.3mm， 0.35mm， 0.4mm， 0.5mm<br>Package included:<br>1 x Assembled J-Head V2.0 GT9 Extruder Head Kit