This is a dedicated refill for Zebra Sarasa gel ink pens, featuring 0.7mm black ink. It allows you to easily replace the ink in your existing Sarasa pen to maintain a smooth writing experience. As a genuine refill manufactured in Japan, it is sold individually, allowing you to purchase exactly the quantity you need economically. Due to the nature of this consumable, printing or engraving is not possible; please verify the compatible pen model before purchasing.