Tougher than PLA and more rigid than TPU, PETG strikes the perfect balance between durability and flexibility, making it ideal for functional parts. PETG delivers glass-like transparency with the durability to withstand the outdoors. FFF devices on the market with a filament diameter of 1.75mm can all be used, but high-speed FFF 3D printers perform better. | Flashforge | | PETG Pro Filament 1.75mm 3D Printer Filament 1kg (2.2lbs) Spool, Dimensional Accuracy +/- 0.02mm | White | Best Buy