Check the listing for details. 4PCS Diamond Sharpening Stone Set 240 400 600 1000 Grit Knife Chisel Sharpener. Color: Silver, Condition: New. Listed at 13.58 USD. Item number:1408Product descriptions: Type: Sharpening Stone Material: Electroplated Diamond Model: Diamond Sharpening Stone Set Color: Silver Grit: 240, 400, 600, 1000 Features: No Water or Oil, Work Fast, Precision Flatness, Cost-Effective, 4 Plates of Fitment: 4 DIFFERENT SHARPENING PLATES: There are four different diamond sharpening plates in total for knife sharpener. They respectively are #240 #400 #600 #1000, and you can choose to use them to sharpen the knife in accordance with their different speed and smoothness WORK FAST: The surface of our diamond sharpening stone is unique clearance channel. At the same time, diamond is super abrasive and reliable to quickly sharpen anything with a sharp edge including high carbon, stainless, and ceramic tool. Works faster than other sharpening abrasives, saving your time! MORE ACCURATE & EFFECTIVE: This type of sharpening plate can not only be used alone but also used together with the knife sharpener. In this way, it can make the effect of sharpening a knife more precise and efficient. PRECISION FLATNESS: The diamond sharpening stone is engineered flat, assuring even contact with the knife or toolPackage included: 1 x Diamond Sharpening Plate 240 Grit 1 x Diamond Sharpening Plate 400 Grit 1 x Diamond Sharpening Plate 600 Grit 1 x Diamond Sharpening Plate 1000 Grit