Check the listing for details. Credit Card Size Diamond Sharpening Stone Knife Home and Garden Tool Sharpener. Color: Silver, Condition: New. Listed at 11.99 USD. Product DescriptionAbout SHARPALSharpal Inc. is a leading manufacturer of professional and patented multifunction knife and tool sharpeners for the outdoor and sports, garden and workshop, and culinary and kitchen industries. For more than 24 years we have been passionately researching and developing quality products, which provide consumers with an easy and cost-effective way to obtain a sharp edge.SHARPAL Diamond Sharpener-the fastest and most effective way to sharpen an edge!Use and CareThere is a ‘break-in’ period for diamond sharpeners. When first use, the surface will appear to be especially rough. This roughness is due to the final manufacturing process and will be removed over time without impacting performance. As the diamond surface wears down, more and more diamond grits are exposed and the sharpener cuts faster.Sharpen dry. No messy oil neededInitial break-inCoarse 325 grit (45 micron) for quick edge settingFine 600 grit (25 micron) for a sharp edgeExtra fine 1200 grit (9 micron) for honingClean surface and wipe DRY after useStore DRYKey FeaturesPatent Pending Ring GripRing grip holding to protect hands from hurting when sharpenCredit Card SizeIt measures L 3 1/4-inch x W 2 1/8-inch x D .14-inch. and it weighs only 2.2 ounce.Storage PouchEach with storage pouch for easy carrying.Stainless Steel BodyDurable stainless steel construction for years of dependable use.Varied UsesStraight Knife Edge (Including Ceramic Knife)Pocket KnivesHunting KnivesFillet KnivesTactical KnivesChef’s KnivesCamp and Garden ToolsAxeHatchetMacheteMower BladeSpadeShearsFishhooksVaried size of hooksOther Edged Tools and Pointed ToolsChiselsRouter BitDrillsCarbide, high speed steel, titanium, ceramics and most of super hard material