Atago stones may have slight natural imperfections

When you switch between stones

Upgrading capability is the most important feature of Zhuk knife sharpeners

please refer to the table below

gunny glide graphene lubricant Scent:Clover Atago stones may have slightGunny Glide is a revolutionary graphene h BN based lubricant designed to work on all surfaces. Graphene and hexagonal boron nitride are two dimensional one atom thick materials. Graphene, a single layer of carbon atoms, is 200x stronger than steel and has more lubricity than any single material known. Graphene when suspended in a lubricant and applied to a surface will burnish itself to that surface. It not only fills any pores or defects in a surface