Solid Marker is the world’s first solidified paint in a marker stick. It always works, anywhere, anytime! They can be used in extreme hot environments. Its innovative “stay fresh” twist mechanism keeps the paint fresh and ready to use. Marks through dust and rust, on rough and smooth surfaces, inside or outside and even in water. Ideal for use on wood, cloth & canvas, plastic, steel & iron, rubber, cardboard, glass, fiberglass & concrete. Used in construction, welding & fabrication, pipelines & drilling, assembly lines, automotive tires & windshields, HVAC (Heating Ventilation Air Conditioning), plumbing systems or with stencils. Dries within minutes, is permanent once dry and virtually odourless.