[Hight Quality PLA]- The black PLA filament is made of premium raw material, which features excellent printability: good ductility, higher strength, no odor, no warp, clog-free, and bubble-free. Allowing 3d printing enthusiasts to create stunning works with fewer issues. [Neatly Wound and Tangle-free]-Our ZIRO filament uses full mechanical wire winding to avoid tangles and knots during printing. And completely drying for 24hrs before vacuum sealed. Moisture-free and bubble-free to make 3d printing much easier. (Please remember to store the filament with the re-sealable bag after use to keep it dry)