The MILWAUKEE INKZALL Double-Sided Black Jobsite Marker features dual tips with ultra fine and fine points for versatile marking. Designed for durability, its clog-resistant tips write clearly on rough, dusty, wet, or oily surfaces without smearing. The quick-dry ink ensures clean marks, and the marker a 72-hour cap-off life to extend usability. For convenience, it includes a hard hat or helmet clip for easy storage and access, making it an i marking tool for demanding jobsite conditions.