Ninnyi 3D Pen Filament Refills Pla 1.75MM, 20 Colors, 5M Per Color, Total 100M, Compatible with Most Printing Pens for Kids

20 Vibrant Colors for Creative Projects: Featuring 20 distinct colors of 3D pen filament refills, each roll is 5 meters long, totaling 100 meters, perfect for crafting small items and adding vibrant details to your creations Eco-Friendly Material: Made from polylactic acid derived from corn and grains, this filament is biodegradable and environmentally friendly, it ensures smooth and consistent extrusion without clogging the pen Safe for Children: 3D pen filament is easy to use, sturdy yet flexible, and melts smoothly, it has a pleasant sweet scent during printing and does not emit harmful fumes, making it safe for kids, fast forming with no bubbles ensures high quality prints Precision and Compatibility: The 1.75mm diameter filament offers precise compatibility with most 3D printing pens, with a diameter accuracy of ±0.02mm and an optimal printing temperature range of 160-200°C, it ensures reliable performance every time User-Friendly Design: Ideal for both beginners and experienced 3D artists, these filaments are simple to operate and allow you to bring your ideas to life with colorful and detailed precision, they make perfect gifts for children who love arts and crafts