Easy to use 12 vibrant colors in a stick format. Just twist the bottom to bring up more of each color. Holbein Maxon Chalk Markers are not liquid ink 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! Holbein Maxon Chalk Markers can be blended with water and can be wiped clean with a damp cloth. Holbein Maxon Chalk Markers can be used on whiteboards, black boards, menu boards, glass, plexi glass and a variety of paper surfaces.