Adopting high-purity materials instead of those waste recycled materials, these 3D pen filament refills can be used smoothly.
Perfect printing effect -- the model printed out has smooth surface and precise color, instead of warping edge and bubbles.
Using quality PLA material, the printing filaments are ecofriendly and safe with no toxic or odour.
The filament refills are of high quality with good tensile strength, ductility, tenaciy and light weight.
One box comes with 20 different colors filaments to meet various creative needs.