The Montblanc 128217 ballpoint pen refill set includes two green ink refills designed for compatible Montblanc writing instruments. These refills feature a medium tip that ensures a smooth ink flow for a comfortable writing experience with minimal pressure. The intense green ink offers a distinctive color option for document annotations, personal notes, or signatures. Each refill measures approximately 12.7 cm in length with a standardized international refill diameter, ensuring compatibility with Montblanc ballpoint pens that require this specific refill type. The refills are manufactured according to Montblanc's quality standards, providing reliable performance and consistent line thickness. The set includes two identical refills, allowing for extended writing capacity before a replacement is needed. The green ink is formulated for good opacity and quick drying on most paper types, reducing smudging. This refill type is suitable for professional, educational, or personal writing needs where a high-quality writing experience is valued. The product is categorized as writing instrument accessories and is specifically designed for Montblanc writing instruments that accept the 128217 refill model. The refills are packaged to protect the ink mechanism and tip during storage and transport.