please refer to the table below

In contrast to regular coated diamonds

Black - ultra-fine grit range for finish sharpening and honing

Debado stones are preliminarily lapped and do not require lapping after purchase

In particular

gunny glide graphene lubricant Scent:Clover please refer to the tableGunny 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