Fil X TPR Flexible Filament – 1KGFil X TPR Filament Flexible, Durable, Rubber Like 3D Printing Experience the perfect balance of flexibility and durability with Fil X TPR Filament, the ideal alternative to TPU. Specially developed to address TPU shortages, TPR offers a matte finish that feels and looks like real rubbermaking it perfect for tires, phone covers, wearable parts, and any print requiring flexibility. Why Choose Fil X TPR Filament? Rubber Like Flexibility: With a Shore A