Naniwa Super-Stone/Advance Sharpening Stones, Set of 3: 400, 1000, 5000 33-Layer Damascus This is the tool to

This is the tool to use

German forged steel of course

especially for German knives or any knife made with standard stainless steel

otherwise hairline cracks can appear over time

Naniwa Super-Stone/Advance Sharpening Stones, Set of 3: 400, 1000, 5000 33-Layer Damascus This is the tool toSet of three Naniwa Super Stone Japanese Whetstone Sharpening Stones: Coarse 400 grit; Fine 1000 Grit, Extra Fine 5000 Grit. Made in Japan. A complete sharpening set, for everything from cutting a new edge with the 400 grit for damaged or very old and dull knives, to honing with the 1000 and polishing, and finally finishing with the extra fine 5000 grit. Stones individually boxed, 21cmx7cm surface (8. 25"x2. 75"). 2cm thick. See individual stones for