Version:
Natural stone (original-Arkansas) of very fine grit quartzite; very strong edges. For the finest surfaces and burr-free grinding. Grit 5000 (pre-grinding), grit 8000 (polishing).
Application:
For deburring, sharpening, truing and chamfering of tools and tool cutters. For re-working bores, surfaces and edges in mould making. Also for improving the surface for stock removal, finishing, and polishing. Best used with oil, paraffin or water.
Note:
Low dose of oil increases tool life and edge sharpness.