TWSBI red fountain pen ink comes in a 70 ml frosted glass bottle. The internal plastic insert makes it easy to draw up almost all of the ink, while the neck fits the aluminum caps from Diamond 50 bottles. Suitable for all fountain pens, the ink flows smoothly on paper and has a satisfactory drying time; it is neither permanent nor waterproof.

• Type: Fountain pen ink
• Color: Red
• Capacity: 70 ml
• Bottle material: Glass
• Bottle finish: Frosted
• Ink-drawing insert: Internal plastic
• Compatibility: All fountain pens
• Properties: Non-permanent, non-waterproof