Easy to wipe and fast-drying, these Sigel Chalkstone markers are an ideal companion for your Artverum glass board     Easy to wipe off, fluorescent for glass and all smooth surfaces similar to glass - chisel tip 1-5 mm - highly opaque. Striking effects and clearly legible notes are guaranteed with these chalk markers 50. The fluorescent colours cover surfaces extremely well - even dark ones - and are ideal for writing on glass and all other smooth surfaces similar to glass. The chalk can be wiped off cleanly using either a damp or dry cloth: we recommend Sigel`s specially developed Delta microfibre cloth.     Supplied in a range of three bright and eye-catching colours     Smooth round tip delivers a line width of 1-2mm     Water-based liquid chalk has excellent covering power that`s ideal for light and transparent surfaces     Fast-drying and easy to wipe off with a damp or dry cloth