Permanent marker offers bold, low-odor ink that provides high visibility and marks on almost any surface - both indoors or out. Design offers a generous supply of low-odor, quick-drying, nontoxic, water-resistant and rub-resistant ink. Durable, 3/16" chisel tip marks in a variety of line widths. Nontoxic marker is ACMI certified (conforms to ASTM-D 4236).