Super Chalk, 1" x 2.8" Diameter, 10 Assorted Colors, 10 Pucks/Box Long-Lasting 10ct Super Chalk Set 10 Washable Chalk Pucks in vibrant colors for outdoor play! Designed to break less & last longer than everyday chalk sticks. Use the side of the Chalk puck to create medium lines, the edges to create thin detail lines, or go for full coverage using the flat sides! Wash driveways and sidewalks clean with a garden hose, or wait for the next rainfall.