Features: 3D Printers hot end kit is from steel andbrass, providing excellent thermal conductivity and ensuring consistent print quality. Good quality materials, reliable; excellent thermal conductivity and even heating; Suitable for 3d printers, easy installs and replaces. Suitable for 3D printing enthusiasts, professional designers and engineers who demand print quality. Can be widely used in a variety of scenario such as home, school, laboratory and studio for printing models, part and components, Specifications: Material: Metal Power: 24V 40W Thermal Type：NTC100K Mounting: Threaded Nozzle: 0.4mm Package Size：About 20x16cm/7.87x6.3inch Types: A: Steel andBrass/ B: Bimetalli BrassPlating/ C：NanosBrassPlating Quantity： 1Set Package Includes: 1Set Print Head Kit note: Due to problem of lighting and shooting,there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurment