Refill your Pilot Frixion Rollerball with ease using these Standard 9-Refills of 0.7mm or 0.5mm Erasable Pen ink. These refills offer clean and smooth writing, and the best part is they're erasable. Say goodbye to messy and scratched out mistakes and hello to a professional-looking document. The Pilot Frixion Rollerball is perfect for those who are constantly on the go and need a reliable pen for their everyday use.