Features: The package contains 6 pieces fountain pen ink in this package, you can replace or fill you pen conveniently, and the sufficient quantity will satisfy you various need. Made of high-quality plastic material, durable. Independent ink tube, easy to carry and use, take out the pen of the suction apparatus, and then put the ink sacs, after a few seconds can be writing. Suitable for daily writing use in office, school, home, you can also use them to make card, write letter, make crafts and so on. You can present this fountain pen ink to yourself as backup, you can also send to your sisters, brothers, relatives, colleagues as a gift at Thanksgiving Day, birthday, graduation, family gathering, holiday or other occasions. Specifications: Material: Plastic Color: Black/Royalblue/Red/Green/Orange/Lakeblue/Purple/Brown/Pink/Rainbow-colored Size: Approx. 1.26x2.36inch(3.2x6cm) Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 6x Pen Ink Cartridges