INKZALL™ chisel tip markers are built for tough jobsite conditions, continuing to write even after 72+ hours without a cap. They mark clearly on wet, oily, dusty, rusty, or debris-covered surfaces and work across concrete, wood, metal, plywood, OSB, and plastic. With a quick-dry formula that reduces smearing on PVC and metal, and a larger chisel tip for bold, easy-to-read lines from a distance, these markers deliver reliable visibility wherever the job takes you.