>>/82632/
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"Grit" as a numerical term typically refers to a measure of abrasive coarseness in materials such as sandpaper or grinding wheels. The numerical "grit" value indicates the size of the abrasive particles:

 • Lower grit numbers (e.g., 40, 60) indicate coarser abrasives, which are better for removing material quickly and for rough shaping.
 • Higher grit numbers (e.g., 220, 400, 1000) indicate finer abrasives, used for polishing or achieving a smooth finish.

Approximate particle size:
 • 40 grit: ~425 microns
 • 400 grit: ~38 microns
 • 1000 grit: ~9 microns
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