Pilot Acroball 0.3mm Ballpoint Pens BLACK (BAB-15MFT-GMB) Features: Advanced oil-based ink for a soft and fluid writing experience An ergonomic pen with a rubber grip to ensure better control and precise writing Refillable with Acroball refill BRFV-10UF-B Tip size: Micro FINE 0.3mm Reliable and hard-wearing tungsten-carbide ball 10x BLACK INK 0.3mm