12 vibrant water-soluble colours in a stick format. Maxon Whiteboard/Chalkboard Markers are not liquid-based but stick based. This results in an affordable chalk marker that is easier to use, not messy and dries quickly. No more crusty felt tips! Maxon Whiteboard Chalkboard Markers can be blended with water and can be wiped clean with a damp cloth. These markers can be used on whiteboards, blackboards, menu boards, glass, plexiglass and a variety of paper surfaces. Conforms to ASTM D4236. AP Product. Non-Toxic.