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The 3M 7100145404 is a 5-inch hook-and-loop abrasive disc engineered for surface finishing and fine material removal using random orbital sanders. Built on a film and polyester backing with a non-woven ceramic abrasive construction, this disc carries a 400-grit, super fine grade rating suitable for light stock removal, surface blending, and pre-finishing prep work. The ceramic abrasive delivers consistent cut throughout the disc life. With 280 vacuum holes, it integrates with dust-collection systems to keep the work surface clear and improve operator visibility. Rated to 12,000 RPM, it handles the speeds typical of professional orbital sanding equipment. Each package contains one disc.
This disc is part of the 3M 775L series and is designed for use with random orbital sanders in trade and industrial finishing applications. Typical use cases include metalworking prep, composite surface finishing, and light paint or coating blending in automotive, fabrication, and general maintenance environments. The purple disc color is a visual identifier for the 775L series. It is sold individually but requires a minimum order quantity of 50 units, making it suitable for shop stock or production-volume finishing operations.
Designed for use with random orbital sanders that accept 5-inch hook-and-loop abrasive discs with vacuum hole patterns.
Attach the disc firmly to the sander pad before powering the tool, ensuring full hook-and-loop contact across the disc face. Confirm the sander is rated to operate at or below 12,000 RPM before use. Inspect the disc for tears or separation before each use and replace if the abrasive surface or backing shows damage. Align vacuum holes with the sander pad ports to maintain dust extraction performance.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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