The Hugo Boss black M rollerball refill (2 units) ensures an intense black ink writing experience, ideal for enhancing the elegance of your rollerball pens. Composed of two medium-point refills, this advanced technology ink dries instantly, preventing smudges even for those who write quickly. Its exact compatibility guarantees a perfect fit in the rollerball body. Indispensable for executives and professionals who demand clean, deep, and flawless black lines in presentations or contracts.