Up for sale is this 4-sided diamond hone block by Valkyrie Wood tools. Each side has a different grit on the face, ranging from extra coarse (200 grit) to fine (600 grit). Each surface of the sharpening face has three layers of diamonds that are nickel bonded to the steel frame. The hone block fits into a non-slip ABS mount. Use water in a spray bottle instead of oil to coat the diamond sharpening surface.