Marks-A-Lot  Chisel Tip Permanent Marker Set, Red, Pack of 12 (98017) Chisel tip allows you to write with a variety of line widths Marks virtually any surface, including cardboard and plastic Dries quickly and is rub-resistant to minimize smudging Nontoxic formula allows safe use by children ACMI certified. Conforms to ASTM D 4236.