StaedtlerMars Lumocolor Markers write on nearly all surfaces, Marks on most plastics, metal and glass, Water soluble, Wipes off with damp towel, Product Dimensions 5, 8 x 2, 8 x 0, 6, Universal pen for use on almost all surfaces, Suitable for overhead projection, Can be wiped off film using a damp cloth, Watersoluble ink, Fastdrying, PP barrel and cap guarantee long service life, Airplanesafe automatic pressure equalization prevents pen from leaking on board aircraft, Standup Staedtler box, Superb colour brilliancy, Lightfast colour black, Line width broad approx, 1, 0 or 2, 5 mm, Refillable, SKU: TCLGR2157