Sharpening Stone, Double-Sided Diamond,kitchen knives, chef's knives, fruit knives, scissors blade sharpening Product Features:Shapening Stone, Doubled Sided-Diamond Descrpition 1. 360 grit Diamond sharpening stone: Coarse sharpening for a blunter bladeModerate sharpening angle and moderate pressure, sharpening forward will lead to the best sharpening effect. 2. 600 grit Diamond sharpening stone: Fine honing for knife polishing and maintenance.A necessary step for the burrs elimination. sharpening approximately once a week at least is recommended. Caution: 1, Sharpening with a moderate pressure to avoid damaging the blades 2, Do not put the sharpening stone into dishwasher or water. 3, To avoid any accidents, the sharpening stone should be away from children.