It can be cleaned during class time Chalk is not easy to break Material: metal Size: 9 x 1.3 cm Color: Silver Instruction manual: 1. Reduces chalk dust and prevents clothing contamination 2. Helps protect fingers from irritation 3. Keeps hands smooth and minimizes chalk residue 4. Helps save chalk and prevents breakage during use 5. Durable for long-term use 6. Ideal for teachers and makes a thoughtful gift 7. Suitable for standard chalk with a diameter of 9-10mm (Note: If your chalk is smaller than 9mm, it may be too thin to fit securely) If using larger chalk, widen the clip at the front end slightly If chalk falls inside, remove the small white cap at the top Use a pencil or pen to push it out from the bottom – simple and easy Package includes: 3 x Chalk clips Content limited to the above; other items not included Note: Lighting and monitor settings may cause slight color variations between the image and actual item. Measurement may vary by +/- 1-3 cm