1、Advanced upgrade kit for Creality Ender 3 printers, this fast and easy to install upgrade kit enhances the performance and reliability of for Ender 3D printers. 2、The included aluminum extruder upgrade allows for a more reliable filament feed and does not wear with the plastic components provided by the factory. 3、High-temperature silicone hot-end socks help to stabilize the hot end temperature of the heating block. Silicone hot-socks also prevent heat from being emitted to the printed matter, keeping the heat away from the printed matter, thereby increasing the o 4、Four flat end compression bed springs increase the rigidity and stability of the print bed. Horizontal beds are the key to producing high quality prints, and these improved stiffness flat end springs mean your bed stays longer. 5、The improved PTFE tube is ready to be installed on your printer. No cutting is required, and both ends are perfectly cut. Suitable for Creality Ender 3/Ender 3 Pro/Creality CR-10/CR-10S/CR-10 Mini.