Bsc Preferred MK503WH Permanent Marking Stick 12 Pack

Product Description

The BSC PREFERRED MK503WH is a permanent marking stick engineered for marking on dark, non-porous surfaces in demanding trade and industrial environments. The opaque, white ink is quick-drying and specially formulated to adhere to wet and oily surfaces without smearing or fading. The non-refillable barrel houses a large ink reservoir, making each marker suitable for extended use on jobsite materials including concrete, glass, and metal. HVAC techs, pipefitters, plumbers, and electricians rely on markers like the MK503WH for labeling conduit, pipe, equipment housings, and structural components where standard markers fail.

The MK503WH is suited for use on non-porous surfaces commonly found in residential and commercial construction and maintenance settings. Its waterproof, smearproof formulation holds up in outdoor conditions and in environments where surfaces may be damp or coated with oils and lubricants. This product is sold as a case of 12 markers, making it a practical bulk option for supply rooms, service vans, and jobsite kits. It is noted as equivalent to part number H-763W.

Key Features

• Opaque white ink provides high visibility on dark surfaces
• Quick-drying ink formulated to mark on wet and oily surfaces
• Waterproof, smearproof, and fade-resistant for lasting marks
• Non-refillable barrel with a large ink supply for extended use
• Marks non-porous surfaces including concrete, glass, and metal
• Sold as a case of 12 for bulk stocking convenience

Compatibility

Designed as a direct equivalent to part number H-763W. Suitable for marking concrete, glass, metal, and other non-porous surfaces in trade and industrial applications.

Installation Notes

No installation required. Store markers horizontally or tip-down when not in use to maintain ink flow. Keep caps secured when not in use to prevent drying. Dispose of used markers in accordance with local regulations for solvent-based markers.