Fine nib black ink, 1 retractable fountain pen includes 5 cartridges
One-handed control, no cap to lose
Sealing cover for high air-tightness, ink won't dry or leak out
Precise ink regulator to adjust the amount of ink, ensuring clear lines and smooth writing
Refillable design with matching cartrideges, environmental-friendly
Ergonomic grip zone for comfortable writing experience
Convenient small transparent box packing, can also be used as daily storage to avoid loss
