It is color changing every 5-8 meter--very fast color change. And the color transition of this rainbow filament is very gentle, replacing the brash and cheap color dividers.Low shrinkage, Solve the problem of warping and blistering, improve the print quality. Uniform line diameter, pure color. High quality filament creates delicate artistic work.Universal compatibility with most FDM 3D printers and 3D Pen. The most striking feature of Matte Rainbow PLA is its matte surface finish. This non-reflective texture provides a subtle yet elegant appearance, setting it apart from traditional glossy filaments. Rainbow Color Gradient: This 3D Printer filament features a smooth transition of colors spanning the entire rainbow spectrum. This results in prints with vibrant and eye-catching color patterns that add a unique visual appeal. Smooth Texture: The PLA base material ensures a smooth and consistent texture, resulting in prints with high-quality finishes. The matte finish complements the rainbow color gradient, creating a sophisticated and modern look.