American Crafts Erasable Chalk Markers 2/Pkg - Great for chalkboards, dry erase boards, windows, glass, mirrors, ceramic and metal! This package contains two American Crafts Erasable Chalk Markers: White. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm- do not mouth or chew. Conforms to ASTM D 4236. Imported.