- Wide Compatibility: These 1.75mm PLA 3D pen filament refills are compatible with most 3D printer pens, including MYNT3D, SCRIB3D, and PIKA3D, as well as a variety of 3D printers that use 1.75mm filament. Please note, they are not suitable for the 3Doodler Start Pen. - Vibrant Color Palette: The refill pack includes 12 popular colors—peach, black, orange, green, yellow, red, white, grey, purple, pink, sky blue, and gold—providing diverse options to inspire your creative projects. - High-Quality Filament: Made from high-purity PLA, these filament refills are designed for easy printing with excellent molding capabilities. They exhibit strong durability and toughness, while being clog- and bubble-free to ensure smooth and consistent extrusion, resulting in precise prints. - Safety Standards: Our 3D pen filament refills meet FDA food safety regulations and comply with RoHS standards, ensuring a safe and reliable product for your 3D printing needs. - Versatile Applications: This filament refill package is perfect for 3D printing enthusiasts. It makes an excellent gift for occasions like Children's Day, Christmas, or birthdays, supporting imaginative projects and creative expression. - Specifications: Each refill measures 1.75mm in diameter and is vacuum sealed for freshness, having been completely dried for 24 hours prior to packaging, ensuring optimal performance.