25 Pieces Chalk Holder with Storage Hard Case - for Blackboard Adjustable. Avoid dust damage:This chalk holders can effectively protect your hands from direct contact with chalk avoiding drying and cracking.also avoid the child put the chalks in the mouth.

Comfortable to Write: these chalk holders are treated with matte cut surface, comfortable to grab and write without hand sliding, won't interfere with the functionality of usual writing.It can protect the chalk broken when using it Do not waste chalk

Material & Size:made of high-quality eco-friendly plastic, non-toxic and tasteless.Each chalk holder measures 3.7 x 0.6 inch (9.5 x 1.6 cm), standard size fits kids and teachers, even anybody.

Widely use: Adjustable and convenient to use and clean, great for for school, office, meeting room and industrial use.