Write, draw and doodle designs on smooth surfaces with this set of 4 white chisel tip chalk markers. These highly opaque wet-erasable markers can be used on chalkboards, windows, mirrors, ceramics and glass.Details:WhiteChisel tip4 piecesWater-based pigment inkHighly opaque, lightfast, odorless and xylene freeEasily erasable while still wetFor use on smooth surfaces such as glass, plastics, chalkboards, mirrors and moreConforms to ASTM D-4236Instructions:Use a damp cloth to wipe off of non-porus surfaces. After use press cap firmly to close. Not recommended for outdoor use.CAUTION: Keep away from flames even when empty.