Flexible 31 Colors 1.75mm PLA Filament Refills for Creative 3D Printing Fun

Each strand is dried for 24 hours prior to vacuum sealing, ensuring a clog-free and bubble-free experience. Shining 31 Colors 3D Pen Refills Type: 3D Printing Pen Finish: Solid. 4 Luminous Colors: Purple, Green, Blue, Orange.

eBay