Heavy-duty marking demands tools that won't quit halfway through the job. Magnum Permanent Markers deliver bold, highly visible lines in a single stroke across shipping cartons, posters, warehouse signage, and large-format displays. The oversized 5/8-inch wool tip maintains its shape through aggressive use, laying down consistent coverage whether you're marking rough cardboard or smooth poster board.

Metal barrel construction withstands drops and rough handling in industrial environments where plastic markers crack. The substantial weight provides control during rapid marking, while the generous ink reservoir keeps flowing through high-volume marking sessions. Quick-drying permanent ink resists smearing and fading on porous and non-porous surfaces alike.

These markers handle the scale and pace of shipping operations, warehouse inventory, construction sites, and event setup. Mark hundreds of boxes without the tip fraying or the ink running dry. The extra-wide line ensures visibility from across the room, essential for directional signage, safety markings, and any application where clarity matters more than delicate detail. When standard markers feel inadequate for the task, Magnum delivers the coverage and durability serious marking work requires.