Zebra Pen Refills 85512, for F-301, F-402, F-701, 0.7mm Fine, Black Ink, Pack of 2. Refills are designed to fit Zebra 301A Retractable Ballpoint Pens, F-301, F-301 Ultra, F-301 Ultra Designer, F-301 Compact, F-401, F-402, F-701, Expandz and Silver Select.