About This DMT Lapping Plate: This 10 by 4 inch whetstone flattening stone features a generous 40-inch surface area and easily flattens conventional and waterstone faster than any other method Diamond Hardcoat Technology: This DMT diamond sharpening stone plate features a revolutionary new coating designed to outlast any other currently available on the market Premium Performance: Our diamond sharpening stones feature an aggressive (95 micron / 160 mesh) surface that quickly and easily flattens waterstone, oilstone, or Arkansas stone Durable Construction: This lapping plate is designed to provide years of consistent performance and reliable service as part of your sharpening stone set Made In The USA: DMT offers the most efficient flattening tools on the planet, tools like this diamond flat plate — the fastest, easiest, and most effective tool for flattening a stone or sharpening an edge Overview Material : Micronized Monocrystalline Diamond Brand : DMT (Diamond Machining Technology) Color : Gray Product Dimensions : 7.4"L x 3.3"W x 4"H Item Weight : 4 Pounds Grit Type : Extra Fine Number of Items : 1 Manufacturer : DMT Global Trade Identification Number : 00017042007423 UPC : 852848005194 017042007423