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The TRU-MAXX SZMM3320 is an aluminum oxide coated mounted flap wheel designed for precision surface finishing on a 1/4-inch shank. With a 1-inch diameter and 1-inch face width, this extra fine 320-grit wheel delivers controlled material removal and consistent surface blending on metal, alloys, and similar workpieces. Rated to 30,000 RPM, it is well-suited for use with die grinders and rotary tools where tight tolerances and smooth finishes are required. Machinists, tool-and-die workers, and metal fabricators reach for this wheel when deburring, blending welds, or preparing surfaces for coating.
This mounted flap wheel is intended for light stock removal and fine finishing work in both shop and field environments. The coated aluminum oxide abrasive construction makes it appropriate for ferrous and non-ferrous metals, and its compact 1-inch diameter allows access to contoured surfaces, bores, and recessed areas that larger wheels cannot reach. It is sold individually and fits standard 1/4-inch collet die grinders commonly found in fabrication, maintenance, and repair operations.
Designed as a direct-mount replacement or supplemental abrasive for standard 1/4-inch collet die grinders and rotary tools used in metal finishing and fabrication applications.
Installation is performed by a machinist or fabricator using a die grinder with a 1/4-inch collet. Ensure the tool is powered off and disconnected from the air supply or power source before mounting or removing the wheel. Do not exceed the 30,000 RPM maximum speed rating. Inspect the wheel for damage before each use and confirm the shank is fully seated and the collet nut is secure before operation.
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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