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. 500g coil of non-toxic bioplastic material free of heavy metals. Recommended for fischertechnik 3D printers. Specificaions: - Age: 13 Years and older - Item size: 20 x 20 x 6.2 cm What's in the box 1 x 3D Printer Refill: Transparent