Sakura Industrial Water Soluble Crayon Marker, 5/8" Diameter x 5" Length, 14 to 122 Degrees F, White (Box of 10) General purpose crayon stick marker is made for a variety of temporary industrial applications where the mark needs to be removed Writes on most dry, smooth or rough surfaces Suitable for marking on glass, PVC, tin, iron, wood, concrete, aluminum, etc The mark is easily removed from non-porous surfaces with water and a cloth Will fit in most generic lumber crayon holders for frequent use