Guaranteed not to hollow or groove, DMT’s precisely engineered Dia-Sharp Bench Stone with continuous diamond surface assures consistent, even sharpening every time. The 8″ length is great for both long and short knives providing cutting edge performance for a quick, keen edge on small contact areas and pointed tools. Perfect for flattening plane soles, irons and chisel backseven conventional and water stones. Includes non-skid rubber feet. Diamond grit clearly marked on side of stone. Fine grit. Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Sharpening surface accommodates range of edges from large knives to small pointed tools. Sharpens knives faster than conventional stones with DMT’s monocrystalline diamond surface. No oil is needed-sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service.Fine diamond (25 micron / 600 mesh) for a razor sharp edgeSharpening surface accommodates range of edges from large knives to small pointed toolsSharpens knives faster than conventional stones with DMT’s monocrystalline diamond surfaceNo oil is needed-sharpen dry or with waterDurable construction will provide years of consistent performance and reliable serviceWARNING: use of this product can expose you to chemicals including nickel which is known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov.