2-Stage Sharpening Stone Scope of application :kitchen knives, chef's knives, outdoor tools, scissors, shear, etc. MaterialABS, White CorondumSharpening MaterialWhite CorondumGrit240 and 800Product Size180*60*27mmPackageColor BoxCarton Size(master)35*23*23cmG.W/ctn9.8kgN.W/ctn9.2kgQty/ctn16pcsDelivery45days after order Product features: 1. Whit Corundum material ensures effective sharpening results. 2. Double-sided, 240 and 800 grit sharpening design ror coarse sharpening and fine honing/polising 3. Non-slip base provides the safety sharpening. Double-sided sharpening stoneDescription: Traditional sharpening stone (240# and 800#) featrues double-sided White Corundum Sharpening Design, applies coarse and fine sharpening.Customized sharpening stone sizes and shapes are available to address your needs. 1.240 grit sharpening stone: Coarse sharpening for a blunter blade Moderate sharpening angle and moderate pressure, sharpening forward will lead to the best sharpening effect. 2. 800 grit 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. Sharpening Stone, (240, 800grit)Caution: 1. Please use the whole surface of stone to keep the consistency when sharpening knives. 2. Sharpening result would be much better with sharpening oil