Permanent marker Uni NO-380 black, chisel tip 1.0–4.5 mm, model UNNO380B/DCA

Uni NO-380 black is a permanent marker with a chisel (slanted) tip that produces variable line widths from 1.0 to 4.5 mm. It is formulated for durable, fade-resistant marking on paper, cardboard, plastic and many other surfaces. The marker is intended for clear, legible markings in office, packaging and industrial environments and is supplied with a cap to prevent drying when not in use.

Advantages

The chisel tip allows quick switching between fine and broad strokes without changing tools, enabling both detailed writing and bold highlighting. The ink provides consistent flow for steady coverage and resists fading on a variety of common materials. The compact, cylindrical barrel supports comfortable handling during extended use and the cap secures the tip to maintain performance between uses.

Suitable for

• Labeling boxes, files and storage containers
• Marking plastic, cardboard and coated paper
• Writing bold text on packaging and shipping materials
• General office and industrial marking tasks

Key specifications

• Ink color: black
• Tip type: chisel (slanted)
• Line width: 1.0–4.5 mm
• Intended surfaces: paper, cardboard, plastic and similar materials
• Body: lightweight cylindrical barrel for handheld use

How to use

Remove the cap and apply the tip to the surface, angling the marker to achieve the desired line width: use the narrow edge for fine lines and the broad face for thicker strokes. Use steady pressure and maintain a consistent writing speed for even ink distribution. Replace the cap after use to reduce evaporation and preserve tip condition. For porous or uneven surfaces, test on a small area first to confirm legibility and adhesion.

Usage recommendations

Store the marker horizontally or with the tip down to help maintain ink flow. Avoid prolonged exposure to direct sunlight and high temperatures to reduce color degradation and drying. For best results on non-porous surfaces, allow ink to dry fully before handling and, where necessary, test for solvent resistance prior to permanent application.