This 3D printer filament bundle 1.75mm is the most cost-effective filament we release in 2023 the color is classic black and white you can have 2 spools now just with one spool s money! And you can just print whatever you want. Saving money but not inspirations! This 3D printer filament bundle adopts a special patented design and manufacturing process to ensure a smooth and stable printing experience for these PLA filaments. It is completely dried for 24 hours before packaging and vacuum-sealed in a PC bag with a desiccant. (Note: Appropriate temperature range and machine operation required.) Full mechanical winding and strict manual examination to make sure the line tidy and less-tangle so as to avoid possible snap and line breaking; Larger spool inner diameter design makes feeding smoother. The Imported raw material upgrades with stronger toughness. It is not easy to break meeting your demands for printing projects of functional parts with higher toughness. Advanced CCD diameter measuring and self-adaptive control system in the manufacturing guarantee these PLA filaments of 1.75 mm diameter dimensional accuracy + / - .02 mm; 1kg/spool total 2kgs (4.4lbs). Compatible with 99% FDM & FFF 3D printers (with heated beds) 3D Pen. Environmental protection made from starch raw materials derived from renewable plant resources.