Compatible Models: This heating block kit is compatible with for 3, 3D printers. EASY INSTALLATION: This hotend kit comes pre-assembled with heating tube, thermistor, nozzle and silicone sock, simply remove the previous print head, replace it with a new one, then lock the retaining clip and wire the cables to complete the installation. The heating block kit has an hardened steel nozzle, which is more wear-resistant and high-temperature resistant, and supports a printing speed of up to 600mm/s. Note: Before use, please check whether the heating tube and thermistor are tightened and whether the nozzle is fixed well to avoid printing problems. Package: 1x heating block Kit, 2PCS 0.4mm brass nozzles. This heating block kit is compatible with 1.75 mm PLA/ABS/PETG/TPU/Wood filament. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Hardened steel + brass Package Contents: 1 x heating block Kit 2