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Dynabrade DynaCut Extreme sanding disc is a 3 inch, 150 grit hook and loop abrasive disc designed for fast cut and long life. Its premium P graded aluminum oxide abrasive cuts aggressively while maintaining a consistent scratch pattern, which helps deliver uniform surfaces across a run of parts. The disc uses a high performance 3 mil film backing that is extremely tough and tear resistant, so it stays intact under edge pressure and during extended sanding. This film backing generates the finest finishes compared to typical paper discs, which supports higher quality prep before finishing or coating. A proprietary clog free coating is pigment free, creating a build-up resistant abrasive surface that keeps the disc cutting rather than loading. The 6-hole "Extreme" vacuum pattern focuses sanding dust toward center extraction holes, improving dust control at the work interface during use.
This 3 inch 150 grit hook and loop disc mounts to a compatible hook and loop backing pad, and the attachment system makes disc changes quick and easy. The hook and loop connection lets operators remove a disc without damaging the film backing, so partially worn discs can be saved for future use on similar jobs. The 6-hole vacuum pattern aligns with matching vacuum-ready pads, directing sanding dust and debris toward the center extraction holes where vacuum draw is greatest. This design keeps the abrasive surface clearer during sanding, which supports consistent cutting action across the entire disc. The combination of film backing, aluminum oxide abrasive, and vacuum pattern is suited to applications where controlled finish and dust management are important.
This Dynabrade aluminum oxide on film sanding disc in 150 grit is positioned for tasks that require a balance between stock removal and surface refinement. The premium P graded aluminum oxide abrasive is manufactured for fast cut and long life, so operators can level surfaces or sand between coats over more workpieces before changing discs. Because the high performance 3 mil film backing generates the finest finishes, the disc supports smooth, consistent surfaces ready for subsequent finishing steps. The disc diameter of 3 inch focuses sanding in tighter areas and smaller panels, which is useful when working around profiles and confined sections on projects. The combination of grit size and film-backed construction serves applications that demand both efficiency and fine finish control in a compact disc format.
The extremely tough and tear resistant high performance 3 mil film backing resists edge damage, helping the disc maintain its shape and contact area for repeatable results over time. This backing keeps the abrasive layer supported under pressure, which stabilizes the scratch pattern during sanding passes. The proprietary clog free coating is pigment free and build-up resistant, so the abrasive stays exposed rather than loading, maintaining cutting action and reducing interruptions to clear the disc. The "Extreme" vacuum hole pattern directs sanding dust and debris toward center extraction holes where vacuum draw is greatest, keeping the work surface cleaner and supporting better visibility while sanding. The hook and loop attachment system makes disc changes quick and easy, allowing operators to rotate discs by wear level and reuse partially worn discs to get consistent performance across similar jobs.
The Dynabrade DynaCut Extreme 79855 disc uses premium P graded aluminum oxide in 150 grit on a film backing, which supports fast cutting with a controlled, fine finish.
The high performance 3 mil film backing is extremely tough and tear resistant, so it holds the abrasive flat under pressure and helps generate the finest finishes on the work surface.
The proprietary clog free coating is pigment free and build-up resistant, so sanding dust sheds from the disc more easily, helping maintain cutting speed over longer runs.
The Extreme vacuum hole pattern directs sanding dust and debris toward center extraction holes where vacuum draw is greatest, improving dust removal at the sanding interface.
The sanding disc uses a hook and loop attachment system, so discs press onto a compatible backing pad and can be removed quickly for changing or later reuse.
This product is a 3 inch Dynabrade abrasive disc in the Abrasive Discs category, identified by manufacturer part number 79855 for selection in abrasive setups.
The Dynabrade DynaCut Extreme 3 inch 150 grit hook and loop sanding disc combines premium P graded aluminum oxide, a high performance 3 mil film backing, and a clog free coating to deliver fast cut and fine finish. Its Extreme 6-hole vacuum pattern directs dust toward center extraction for cleaner sanding, while the hook and loop attachment system supports fast disc changes and reuse of partially worn discs across similar tasks. For setups calling for film backed aluminum oxide discs in this size and grit, this Dynabrade 79855 disc aligns with demanding abrasive work.
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