Don't toss out your favorite name pen just because the ink is running low! These Shachihata refill ink cartridges give your trusted markers a new lease on life with fresh, vibrant red ink. Each pack contains two convenient cartridges that are super easy to install - just remove the stamp from your pen unit and swap out the old cartridge for a new one. These refills work with several Shachihata models including Name Pen, Name Ell, Name Eltwin, and Pair Name pens, but important note - they won't work with Name Pen Diare or Name Pen Q models. The cartridge design makes mess-free refills a breeze, so you don't have to worry about ink getting everywhere. It's crucial to match the ink color to what your pen originally used - using the wrong color can seriously affect performance and potentially ruin your pen. The red ink delivers that bold, consistent impression you expect from Shachihata products, making your stamps look clean and professional every time. Whether you're using these for office paperwork, labeling systems, crafts, or any other stamping needs, having fresh ink makes all the difference in getting crisp, clear impressions. Keeping a couple of these refills on hand means you'll never be caught with a fading stamp right when you need it most. They're an economical way to extend the life of your quality Shachihata pens rather than buying entirely new units. For anyone who relies on these handy stamp pens for daily tasks, these refills are an essential supply to keep in your desk drawer.