Avery Marks-A-Lot permanent markers make it easy-to leave your mark. The durable chisel tip does not fray over time and makes it easy-to create lines in various widths and sizes. This remarkable black permanent marker ink sets in quickly when written but won't become dried out if you forget the cap. Leave the cap off the marker for up to 30 minutes and you'll still be able to pick it back-up and keep writing. The versatile permanent ink resists wear, fading and water exposure and is the excellent choice for every project. These markers work on almost all surfaces including paper, cardboard, metal, PVC pipes, concrete walls, plastic and ceramic. Great for marking sports equipment, creating yard sale signs and marking boxes in warehouses. Marks-A-Lot permanent markers cover every use for classrooms, offices, manufacturing facilities and more. Avery Marks-A-Lot markers are non-toxic and low-odor. Our ink is ACMI certified as non-toxic and conforms to ASTM D4236.