The SCRIB3D Pen Filament Refills include 20 vibrant colors, each with 16 meters of 1.75mm PLA filament. Compatible with SCRIB3D, PIKA3D, MYNT3D, and most other 3D pens, these high-quality filaments are perfect for creating colorful 3D art and designs. With a wide variety of colors, they provide endless creative possibilities for your 3D printing projects.