Amazon.com: SainSmart 1.75mm Black ePA-CF Carbon Fiber Filled Nylon Filament 1KG (2.2lbs) Spool for 3D Printer : Industrial & Scientific
Carbon Fiber PLA Filament 1.75mm, 3D Printer Filament Carbon Fiber, High-Accuracy +/- 0.05 mm, Carbon Black Pla Filament for Most 3D Printers, 1KG Spool(2.2 lbs) – Tronxy 3D Printers Official Store
Carbon Fiber Filament for 3D Printer – 1.75mm/3mm 0.8kg High Strength Material PLA Based - 3DP Block
Amazon.com: Carbon Fiber Filament, TRONXY Carbon Fiber PLA 3D Printer Filament 1.75mm, for Most 3D Printers, High-Accuracy +/- 0.05 mm, 1KG Spool(2.2 lbs) Black Filament : Industrial & Scientific