12 Colors 3D Printing Pen Filament Refills 1.75mm PLA, 16.4 inch Each Color, Not Easy to Break and Clog, Rapid Cooling and Forming $7.99

uxcell 3D Pen Filament Refills,16Ft,1.75mm PLA Filament Refills,Dimensional Accuracy +/- 0.02mm,for 3D Printer,Blue $6.89

3D Pen Filament Refills 1.75mm PLA Filament Pack of 20 Different Popular Colors(16.4FT/5M Each) Included 4 Glow in The Dark- Plastic Filament for 3D Printing Pen

$14.99