クロス 詰め替えインク ボールペン用 油性 替芯 B 太字 8100 ブルー 正規輸入品

Description

🖋️ Elevate your pen game — because your ideas deserve to be bold.

This official Cross oil-based ballpoint pen refill (model 8100) delivers a bold 0.5 inch blue line with a 4.5 inch length, engineered for smooth, consistent writing. Lightweight and precisely crafted for Cross pens, it’s the perfect upgrade for professionals who demand style and substance in every stroke.