This full metal CHT brass nozzle from Prusa heats filament more evenly and provides improved flow through the core heating technology. In addition, it is easy to change and increases the reliability of the 3D printer. This product is 0.6 mm and suitable for the MK4, XL, MK3.9, MK4S, MK3.9S and the CORE One 3D printers from Prusa.