The high-quality Fischertechnik filament (PLA, 1.75 mm in diameter), for true to size and precise print results, is available in a variety of Fischertechnik colours. 50g roll of non-toxic bioplastic material free of heavy metals. Recommended for Fischertechnik 3D printers. Specifications: - Age: 13 Years and older - Product Size: 22 x 31.5 x 1.5 cm What's in the box 1 x 3D Printer Refill: Transparent