Crafted from PCL material, this 3D printing is compatible with most 3D printing pens. The low-temperature feature ensures that the melts smoothly, reducing the risk of burns and making it safer for users of all ages. The mixed colors allow for creative freedom in your 3D printing projects. Features -Color:Multi -Material:Plastic -Size:500.00X0.17X0.17cm/196.50X0.07X0.07in -Innovative design: this product allows you to freely create threedimensional artworks, catering to your creative desires - PCL material: crafted from PCL, a widely used thermoplastic, it offers a shiny, silky finish, lower melting point, and userfriendly experience without the need for a heated bed -Userfriendly: just insert the into the pen's rear to begin your creation. it's easy to operate for users of all ages -Multicolor set: the package includes multiple colors, enabling you to produce models in various shades, adding vibrancy to your creations -Versatile use: ideal for a range of such as education, art, and diy projects, fulfilling diverse needs and enhancing your creativity Package list: 15 rolls x pcl refills (5 meter/1 roll)