As these are handmade items

Japanese knives became much thinner as it has evolved to become sharper

4% molybdenum

New material improves water resistance and durability

• After use

"KYO HIGASHIYAMA" Synthetic Whetstone Double Sided #1000/#6000 (Middle/Finish) AO-TSUBAME As these are handmade items"KYO HIGASHIYAMA" Synthetic Whetstone Double Sided #1000 #6000 (Middle Finish) Size : 205mm x 75mm x 35mm, Weight Approx. 1. 2 kgs Grain Degree : #1000 #6000, Middle and Super Finish Made In Japan No need to soak before using. Just pouring some water on the surface is enough. ST series is standard and main series, with all number of whetstones to fulfill you sharpen the knife. CR VT series is for hard stainless and carbon steel quick to sharpening.