The Kaweco Sunrise Orange 50ml fountain pen ink refill illuminates your notes with a warm and dynamic sunny color in a 50ml bottle. The highly soluble and quick-drying German ink ensures flawless writing, keeping the feeder clean and fluid in any fountain pen with a converter. The glass inkwell design facilitates the suction of ink to the last drop with total stability. The contagious energy of sunrise orange is perfect for mind diagrams, visual highlights, and inspiring artistic calligraphy.