Description: The sharpening stones are made from professional grade natural stone, which is quite wearable . It is used to grind and hone the edges of steel tools and implements. Stone is flat for working flat edges, and is available in 8 different grit sizes. Choose the right sharpening stone for your stoning work or you can get all three to keep edges of tools sharp. Features: High-grade sharpening stone ensures good sharpening results. The sharpening stone is small in size, portable and convenient to sharpen more effectively. There is a base which would keep stone in place or installed on a sharpener while sharpening. Eight optional grits you can choose for either coarse grinding or fine grinding. Can be used to sharpen kitchen tools, scissors, cutter, shave tool, etc. Specifications: Material: Natural stone Grit and Color: 240#Pink, 400#Light Gray, 800#Black, 1000#Camel, 3000#Red, 5000#Dark Gray, 8000#White, 10000#Green Item Size: 150 x 20 x 5mm / 5.9 x 0.8 x 0.2" Quantity: 8pcs Weight: 444g(approx.) Instruction: 1. Soak the sharpening stone in water(salt water is better) for 15 minutes before use . 2. Use the low grit stones for coarse grinding, use the high grit stones for fine grinding. 3. Sharpening blades in a 10~20 degree angle would reach a better effect. 4. After sharpening, clean the stone with wet cloth or water, then dry it. Package Includes: 8pcs x Whetstones Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.