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
taulman3D Carbon Fiber Alloy Nylon 3D Printing Filament