… parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts …
Explanatory notes
… parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts … (e.g., rectangular, trapezoidal, sectors or segments of a circle, in the form of a knife blade, oblong with tapered … used in the hand, for whetting or sharpening grindstones of artificial abrasives, and, as a secondary use, for …