INKZALL™ Chisel Tip Markers are designed for clear, durable markings in tough conditions. They continue to write even after 72+ hours with the cap off and perform on wet, oily, dusty, rusty, or debris-covered surfaces. Suitable for concrete, wood, metal, plywood, OSB, and plastic, the quick-dry ink reduces smearing on PVC and metal. The larger chisel tip creates bold, easy-to-read markings that remain visible from a distance.