Specifications:Material: Aluminum & Stainless Steel & BrassInstallation type: External thread connectionScope of application: 3D printerNozzle size: 0.4mmThroat pipe length: 30mmAluminum block size: 20 mm x 20 mm x 10 mmOperating temperature range: -40°C to +260°C (-40°F to +500 °F)Thermistor and heater cable length: 1MFeatures:Tip of the nozzle, aluminum heating block, Throat pipe (built-in Teflon).MK8 Extruder Hot End kit, white wire was temperature thermistor, red wire was heating tube 12V40W.Package included:3 x Aluminum block3 x Heating tube (heating tube 1 m long, 12V 40W)3 x 1.75MM 0.4MM Brass Nozzle3 x M6*30mm Throat pipe (built-in Teflon)3 x Thermistor + Brass sleeve (1 meter long)