OX Pro 8oz Permanent Red Marking Chalk Permanence 3

Some marking jobs only need a temporary guide, but others need a line that stays visible long after the first snap. The OX Pro 8oz Permanent Red Marking Chalk Permanence 3 is designed for those tougher site conditions where durability matters. OX describes this chalk as delivering durable, weatherproof lines that resist fading, rain, and wear for up to 1 month, making it a strong choice for outdoor use and for projects where layout marks must remain easy to follow over time.

This product is supplied in a practical 226g / 8oz bottle, giving tradespeople a compact but useful quantity for regular refill work. The red chalk uses a micro-fine formula for clear, visible markings, and OX positions it as suitable for a broad range of surfaces including wood, plasterboard, concrete, stone, and metal. That versatility makes it useful across brickwork, construction layout, site alterations, and correction work where strong line visibility is important.

OX also highlights the packaging design, which is built to make day-to-day use easier. The bottle features a high-flow nozzle for controlled filling and a leak-proof quarter-turn twist cap that helps keep moisture out and reduce clumping. That matters on busy sites, where chalk that pours cleanly and stores well saves time and avoids mess in the toolbox or van.

Authorised UK stockist ITS adds that the chalk is formulated for good adhesion and high visibility, and can be used for interior and exterior marking jobs. Taken together, that makes this a practical professional-grade refill for chalk reels when you need red lines that hold their visibility and perform reliably in tougher working environments.

Key Features

• Permanent red marking chalk with Permanence 3 rating.

• Produces weatherproof lines that resist fading, rain, and site wear for up to 1 month.

• 226g / 8oz bottle size.

• High-flow nozzle for easier, cleaner filling.

• Leak-proof quarter-turn twist cap helps prevent moisture ingress and clumping.

• Micro-fine formula for strong, visible lines.

• Suitable for wood, plasterboard, concrete, stone, and metal.

• ITS describes it as formulated for good adhesion, high visibility, and interior/exterior use.

Specifications

• Product Name: OX Pro 8oz Permanent Red Marking Chalk Permanence 3.

• SKU: OX-P630805.

• EAN: 9341231061318.

• Brand: OX.

• Product Type: Chalk powder refill / marking chalk.

• Colour: Red.

• Fill Size: 226g / 8oz.

• Packed / Product Weight: 0.25kg to 254g depending on retailer format.

• Permanence Rating: 3.

• Weatherability: Up to 1 month.

• Manufacturer Warranty: 90-Day Hassle Free.

• Available in UK: Yes.

• Sub-Brand: N/A.

What’s Included

• 1 x OX Pro 8oz Permanent Red Marking Chalk bottle. ITS lists this as Pack Size 1, and the official OX pages do not show any included accessories.