Our 0.7mm black office press-type ballpoint pen refills are essential for anyone who values efficiency and convenience in their writing tools. These portable pen refills are easy to install and provide a consistent ink flow, making them ideal for both professional and personal use. Whether you're jotting down notes in a meeting or writing a letter, these refills ensure that your pen is always ready to perform. Features -Color:Black -Material:Refill -Size:10.00X0.20X0.20cm/3.93X0.08X0.08in -Smooth fine tip: the fine tip of the refill ensures a smooth and fluid writing experience, making it ideal for precise and neat handwriting -Easy to replace: the pen refills are designed for easy replacement, making the process quick and convenient for users -Presstype pen compatibility: specifically designed for presstype ballpoint pens, these refills are compatible with various pen models, offering versatility -Shareable convenience: for sharing with friends, colleagues, and classmates, ensuring everyone has access to a reliable writing tool -Construction: crafted from solid materials, these refills are designed to withstand frequent use without compromising on performance Package list: 400 x ballpoint pen refills