CHALK

• 13 vivid and diverse colors
• Made with 98% pure calcium carbonate for excellent writing feel
• Minimal dust for a cleaner classroom environment
• Specially coated to prevent dust from sticking to hands
• Does not damage the blackboard surface
• Size/Shape: 81mm x 10mm / Round
• Breakage Strength: 3 ~ 3.2kg (KS Standard: ≥1.8kg)
• Writing Distance: 400m ± 50m
• Did You Know? Calcium carbonate and calcium sulfate, which make up more than 98% of chalk, are safe substances listed in the Ministry of Food and Drug Safety’s Food Additives Code and are used in products like gum, tofu, toothpaste, and tablets.

Usage and Precautions

• Store in a dry place as moisture can significantly affect the impact strength
• Avoid excessive external shocks during transportation