6 pack non-toxic, safe and dustless chalks, included: White, Red, Green, Blue, Yellow, Orange different colors. Convenient twist up design chalks with plastic pen barrel for extra durable and keep hands stay away from dirty. Chalk writes well, offering clear and distinct lines on chalkboards. It can be easy wiped by wet towel. Dimension: Length - 9cm/ 3.5", 1.0mm tip, weight: 150grGood for home office blackboard, greenboard for boys girls children writing, drawings, doodling. Color Name:6 Pack Dustless Twistable Non-toxic Colored Chalk - Dustless & Non-toxic - Convenient twist up design - Suitable size for small hands - Offering clear and distinct lines - Length: 9cm/ 3.5" - 1.0mm tip - weight: 150gr - For boys girls children writing, drawings, doodling