I find this Hone at www.dick.biz, the hone 10-14 cm x 7-9 cm x 1-2 cm (irregularly shaped natural pieces ground smooth on one side)
Grit ca. 6,000-8,000, size ca
It cames for 28,32 EUR,
What do you tink about it?
http://www.dick.biz/isroot/dick/File...oss/711303.jpg