This set includes 100 heat-erasable fabric marker refills designed for temporary marking on shoes, clothing, and leather. Each refill features a durable steel nib with high hardness, ensuring a clear and effective mark. The pens are approximately 13cm (5.1 inches) long and made with a plastic shell. The ink disappears when exposed to temperatures around 60°C and reappears at approximately 10°C, making them suitable for temporary markings. They are especially effective on light-colored leather, providing practical and convenient use. To ensure optimal performance, it is recommended to perform a small test before use, as material properties vary. After use, cap the pen tightly and store in a cool, shaded place to maintain the ink’s effectiveness. These refills are ideal for industrial marking needs, offering durability and high-quality marking performance.