Sakura tough marker for tough jobs, the Solid Marker is solidified paint in a marker stick. It marks through oil, grease, rust, mud, snow-inside or outside. Dries within minutes, and is permanent once dry. Solid Markers won't fade or wash off like chalk. The special "stay fresh" twist mechanism keeps paint fresh and ready to use. Ideal for use on wood, cloth and canvas, plastic, steel and iron, rubber, cardboard, glass, fiberglass and concrete. Solid marker features a tough, broad stroke, is quick-drying and virtually odorless. This marker is widely used in commercial and industrial applications in construction, welding and fabrication, pipelines and drilling, assembly lines, automotive tires and windshields, HVAC, plumbing systems or with stencils. Working temperature range: 14 to 392 degrees F 13 mm wide mark can be trimmed with knife for smaller marks. Alcohol based cleaners will remove ink from non-porous surfaces. Meets ASTM and ACMI non-toxicity standards, and is AP seal certified.