Shapton Professional Kuromaku 320 Grit Sharpening Stone 63-Layer Damascus 58 for long life and

58 for long life and rust-free care

workmanship and finish applied to the entire Classic lineup

They are artifical stones made with the magnesia bonding method

but please do NOT store them in water

Shapton Professional Kuromaku 320 Grit Sharpening Stone 63-Layer Damascus 58 for long life andShapton Kuromaku Professional Whetstone, 320 Grit, #K0709 210mm x 70mm, 15mm thick. These Kuromaku Professional series stones are very fast cutting and long lasting, offering nice sharpening feedback while still being very hard so they resist dishing nicely. Note that these are splash and go, so do not soak these stones. These stones come in a convenient plastic case that also doubles as a stone holder, though the affordable Naniwa universal