Oil-Based Construction Marker Expert+ MN-88-082 — Black, 2.5 mm Tip, 10 ml

Expert+ MN-88-082 oil-based construction marker in black features a 2.5 mm tip and a 10 ml ink capacity. The marker delivers medium-thickness, high-contrast lines on a variety of building materials including concrete, metal, wood and many plastics. Its oil-based, water-resistant ink is formulated for both outdoor and indoor marking where permanence and legibility are required for site layout, labeling and general construction tasks.

Advantages

The oil-based formula produces durable, fade-resistant marks that resist water and most weather conditions. The 2.5 mm tip provides a consistent medium-width line suitable for visible layout lines and text while the 10 ml reservoir ensures extended use between replacements. The marker is compatible with rough and smooth surfaces, adheres well to porous materials like concrete and to non-porous surfaces such as metal and coated plastics.

Suitable for

• Marking concrete and masonry for cutting or drilling guides
• Labeling metal parts and steel profiles on-site
• Layout lines on wood framing and carpentry work
• Marking plastic panels, pipes and fittings
• Temporary identification of materials in storage or transport

Key specifications

• Ink type: oil-based, water-resistant
• Tip size: 2.5 mm (medium)
• Ink volume: 10 ml
• Color: black
• Suitable surfaces: concrete, metal, wood, plastic

How to use

Shake the marker well before use to mix the ink. Test the marker on a scrap piece of similar material to confirm line thickness and adhesion. Apply steady pressure for an even medium-width line; for thicker marks, angle the tip slightly or apply additional passes. Store the marker horizontally or with the tip down when not in use to maintain ink flow. Cap the marker securely after use to prevent drying.

Usage recommendations

For best results on rough or highly absorbent surfaces, make a brief test mark and allow drying time before making final layout lines. Avoid using on surfaces at extreme temperatures; store between recommended ambient conditions to preserve ink consistency and prevent premature thickening or drying.