PILOT ballpoint pen refill for Acro 1000 Medium blue

* Combining style and performance is now possible with the new high-end Acroball 1000 model. * Never has a ballpoint pen glided so easily on paper. * Experience a unique writing pleasure thanks to the well-known fast-drying Acroball oil-based ink. * The robustness of the Acroball is proven by its reliable and durable tungsten carbide writing ball. * Medium point. * Blue ink.