Jinhao 35 Fountain Pen Ink Refill Cartridges Designed for Jinhao and Baoer Pens

These are Jinhao fountain pen ink cartridges, which are standard international size and typically come in packs of 5.  Color: Black ink. Quantity: Five cartridges per pack. Compatibility: Designed for Jinhao and Baoer fountain pens. Ink Type: The ink is described as smooth-flowing and fast-drying.