INKZALL™ Marker with Stylus delivers reliable performance in tough conditions, staying sharp without mushrooming or pushing back under pressure. Its acrylic nib writes on rough surfaces like OSB and concrete and continues marking even after 72+ hours with the cap off. Designed for versatility, it works on concrete, wood, metal, plywood, OSB, and plastic—even on wet, oily, dusty, or rusty surfaces. The stylus tip allows use on iPads, iPhones, tablets, and touchscreens, even with gloves on. Quick-dry ink reduces smearing, while the thin body reaches tight spots. Additional features include a helmet clip, one-hand easy-open cap, lanyard hole for device attachment, and anti-roll design to prevent accidental drops.