This double sided sanding tool is the approximate size of a credit card, coated with monocrystalline diamonds it gives a fast, clean, stock removal and good sharpening performance.
Amongst its many uses it can help to shape and refine your dry Art Clay pieces.
The handy double sided card is for coarse sharpening and fine honing with one side having a Coarse 360 grit (nom. 40 microns) coating and the other a Fine 600 grit (nom. 25 microns) coating.