The TOUCH Twin Refills are specifically designed to replenish the ink in your TOUCH Twin Markers. They come in a wide variety of vibrant colors, offering smooth, even coverage for optimal artistry. Each refill contains 20ml of high-quality alcohol-based ink that is fast-drying, fade-resistant, and non-toxic. They offer an economical and environmentally friendly option, extending the life of your markers. These refills ensure that your TOUCH Twin Markers will continue to provide the professional-level performance you've come to expect, making them an essential component in any artist's toolbox.