This Milwaukee Inkzall XL Chisel Tip Marker is designed for tough surfaces and challenging conditions. It can be used on concrete, wood, metal, plywood, OSB, and plastic, even when the surfaces are wet, oily, dusty, or rusty. The marker features a quick-drying ink to prevent smearing and a clog-resistant tip that stays sharp for rough surfaces. Enjoy 72+ hours of cap-off time and a built-in hard hat clip for convenient storage. Its extra-large chisel tip makes markings easier to read from a distance.