StillCool Chalk Holders for Kids, Chalk Chalk Clip Set Come with 5 White Chalks (Colorful) High-level non-toxic ABS material, non-toxic and tasteless. Not easy to be broken. Protect your hands from direct contact with chalk avoiding drying and cracking, also avoid the child put the chalks in the mouth. Measures 3.7 x 0.6 inch (9.5 x 1.5 cm), standard size fits kids and teachers, even anybody. Blackboard adjustable chalk clip set for school & office drawing board. 18 months of product warranty are provided free of charge. Package includes 5 different colors chalk holders, each holder has a white chalk inside.