It is a special filament series designed for high-speed printing devices. It is compatible with fast 3D printer models such as Creality K1, Creality K1 Max, Ender 5 S1, Ender 3 V3 Neo, Ender 3 V3 KE, CR10 SE, Bambu, Elegoo, etc. Additionally, it is also compatible with standard speed printing devices.