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 colors. 500g coil of non-toxic bioplastic material free of heavy metals. Recommended for Fischertechnik 3D printers. Specifications Comes in a roll of 500g Designed for the Fischertechnik 3D Printer.