This is the spool-less version, which is designed to refill empty spools in a cost-effective and sustainable way. RFID for intelligent printing Experience the future of 3D printing with the Bambu Lab AMS (Automatic Material System). All important printing parameters are stored in a practical RFID chip. The 3D printer can read the print parameters independently. No more tedious settings - simply insert your filament and start the printing process. Enjoy convenient and time-saving operation without complicated manual settings. Reusable spool Bambu Lab's filament system is geared towards an environmentally friendly and reusable spool design, which reduces plastic waste by at least 20 %. Bambu Lab attaches great importance to sustainability and the packaging material has been carefully selected to minimise the use of non-recyclable materials. Further information on the coil design can be found here. You can also print the spools yourself - the appropriate files can be found under this link. Bambu Filament Guide Are you unsure whether this filament is right for you? The Bambu Lab Filament Guide offers a comprehensive comparison of the properties, application possibilities and printing requirements of Bambu filaments. It is designed to help you choose the material that best suits your individual needs.