Navulset voor balpennen, verkrijgbaar in zwart en blauw, essentieel voor soepel schrijven.

Essential for stocking up on writing supplies! This ballpoint pen refill comes in three practical combinations: 12 pure black, 12 pure blue, and a mix of 6 black and 6 blue, accurately matching different usage needs, covering office, study, and daily recording. The pen core uses high-quality ink, with a full and pure color. The black color is rich and clear, and the blue color is refreshing and eye-catching. The writing is smooth without stuttering or smudging. The quick drying formula avoids ink on the hands, making the reading experience more comfortable. The 0.7mm bullet tip is wear-resistant and durable, with even and stable ink output, suitable for most push and cap ballpoint pens, and easy to replace without the need for additional tools. High cost performance set, with a cost-effective unit price per unit, and enough stock to last for a long time. The pure black version is suitable for office signature and formal document writing; Pure blue version suitable for learning notes and highlighting key points; Mix and match styles cater to various scenarios, flexible and practical. The sealed packaging of the pen core is moisture-proof and dust-proof, making it easy to store and not easy to dry up. Whether it's for students, office workers, or daily backup, it's a worry free choice. Keep your eyes closed and don't step on landmines!