Bambu PLA Aero achieves low density and light weight by foaming at high temperatures during printing and creating small holes inside the prints. It's the perfect choice for light-weight and energy-saving prints, including unmanned aerial vehicles (UAVs), aerodynamic models, and gliders.   Foaming PLA materials (PLA Aero) have high requirements for material drying and parameter settings. Please carefully read Instructions for printing aircraft model with foaming PLA (PLA Aero) before starting the printing process.   Product Features Specialized for 3D RC Planes Printing Low Density and Light Weight Tough with Good Impact Resistance Matte Finish For Easy Coloring Comes with Basic Reusable Spool Diameter: 1.75mm +/- 0.03mm   Cautions for Use Recommended to dry out before use AMS Compatible