Welcome to the store! 1. Featuring a high-hardness steel tip, these refills enhance marking efficiency and are built for durability. 2. This white pen refill is ideal for marking on dark-colored leather. 3. The mark disappears when the temperature reaches approximately 60℃ and reappears at -60℃. 4. Versatile for temporary marking on shoes, clothing, and leather. 5. Comes with 100 pen refills, fully meeting your needs. Item Type: High-Temperature Disappearing Pen Refill Shell Material: Plastic Pen Point Material: Steel Color: As shown in the picture Total Length: Approx. 13 cm/5.1 inches Quantity: 100 pcs Uses: Used for temporary marking of shoes, clothing, and leather. Instructions for use: 1. This product disappears when the temperature reaches approximately 60℃. 2. Used for temporary marking of shoes, clothing, and leather. 3. The use of a high-hardness steel head improves the marking effect and is durable. 4. White is used on dark leather; red, blue, and black are used on light leather. 5. White will reappear at minus 60℃, and blue, red, and black will reappear at -10℃. 100 x High-Temperature Disappearing Pen Refills Your satisfaction is our highest priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!