PET-G Carbon filament from Spectrum is a modified PET-G filament with 10% added carbon particles. This gives it a higher stiffness, hardness and tensile strength, while it shrinks little and adheres well to the build plate. Your 3D prints will have a matte appearance, making the layer lines less visible. This filament is 1.75 mm, comes in the color Black and has 1 Kg on the spool.