Pilot Acroball 1.0mm Broad Ballpoint Pens BLACK (BAB-15M-B) 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-10M-B Tip size: Broad 1.0mm Reliable and hard-wearing tungsten-carbide ball 10x BLACK INK