Chalk Clip [Set of 6] Chalk Holders I purchased these on Amazon today for 699 yen, but I'm selling them because I ordered the wrong size. [Design] Translucent, allowing you to easily see the remaining amount and know when to replace the chalk. Can also be used to categorize chalk colors. [Product Features] Twist-type, allowing for fine adjustments to set your desired length. Prevents chalk from breaking, smooths writing, and reduces chalk waste. Also prevents dirty or rough hands, keeping them clean and convenient. [Various Uses] Reusable. Suitable for 0.9-0.95cm chalk.