2 Ct Pack Refills F-Refill for Zebra F-301 F301 F-402 F-701 Pen Black Ink 85512 The product is a pack of 2 ct refills designed for Zebra F-301, F-402, and F-701 pens. These black ink refills are specifically made for these Zebra models, ensuring compatibility and high-quality performance. Perfect for office use, these refills help keep your pens constantly filled with ink, allowing for smooth and consistent writing or drawing. Made by the trusted brand Zebra, these ink refills are a reliable choice for maintaining a steady writing supply.