1. Multiple colors, such as rainbow. 330 metres long and 20 colours. 10 meters filament in one color and 11 colors in one cycle2. Print temperature control & diameter: 190-220℃. 1.75 mm (tolerant ± 0.04 mm).4. Alta qualit: Nessuna bolla o polvere all'interno, ordinatamente arrotolato per ridurre ...