YOUSU Silk Dual Color PLA Filament, Coextrusion Filament, Multicolor 3D Printer Filament 1kg, Compatible with Most of 3D Printer, Silk Silver Copper Color Change Filament.
Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.