Naniwa Super-Stone/Advance Japanese Whetstone Sharpening Stone, 800 grit Kitchen Tools They are very hard and

They are very hard and long-lasting

croissants

It's just one of those knives every kitchen should have and comes in handy for all kinds of things: yes

It will also stain and discolour -- this is normal

Naniwa Super-Stone/Advance Japanese Whetstone Sharpening Stone, 800 grit Kitchen Tools They are very hard andNaniwa Super Stone 800 Grit Japanese Whetstone Sharpening Stone, NO Stand, 21cm x 7cm surface, 2cm thick. This medium fine stone is perfect for grinding a new edge on your knife, or for doing regular touch up work when you don't need to remove much metal and so don't need to use a very coarse stone to start with. The Naniwa Super Stones are excellent whetstones, very reliable, forgiving, and not fragile. A great choice for the beginner or casual home