Milwaukee INKZALL™ Black Medium-Point Jobsite Marker is specially designed to perform on the roughest surfaces you encounter on the jobsite, including OSB, cinder block, and concrete. This marker features a clog-resistant tip that ensures consistent ink flow, allowing you to write clearly even on dusty, wet, or oily surfaces. The ink dries quickly to minimize smudging, yet the marker won’t dry out quickly when left uncapped. For added convenience, it includes a built-in hard hat clip and a lanyard hole, making it easy to keep within reach while you work. Model Number: 48-22-3102