Carter's permanent markers make it easy to leave your mark. Durable chisel tip does not fray over time & makes it easy to create lines in various widths & sizes. These large markers also hold more than 30 percent more ink than regular desk-style markers. This remarkable red ink sets in quickly when written to reduce the risk of smudging & smearing. Versatile, red ink resists wear, fading & water exposure. Markers work on almost all surfaces including paper, cardboard, metal, PVC pipes, concrete walls, plastic & ceramic. Nontoxic, low-odor markers are great for marking sports equipment, creating yard sale signs & marking boxes in warehouses. Ink is ACMI certified as nontoxic & conforms to ASTM D4236.