Amazon.co.jp: 3D Printing Filament, PA6 K7 High Performance Nylon Filament, FDm Printing Filament is Strong and Abrasion Resistant - Black_2.85mm : Industrial & Scientific
Amazon.co.jp: eSUN Carbon Fiber Nylon 3D Printer Filament, Carbon Fiber PA Dimension Accuracy +/-0.05 mm, 1.75 mm Diameter for 3D Printers, 1KG Net Quantity (2.2LBS) Spool Molding Material Carbon Fiber Fill (Natural):