This diamond sharpening stone uses diamond as an abrasive material, which is more effective than a normal whetstone and less likely to damage the edges. Double-sided diamond stone design with 400 grit for coarse sharpening and 1000 grit for fine sharpening. Oval hole design to collect and retain metal shavings. Suitable for sharpening family kitchen tools, such as cutlery, scissors, hunting pocket knives, blades, razors, hatchets, and axes. This diamond sharpening stone also works for carving knives, gardening tools, swords, wood chisel sharpening. We understand the importance of safety when using sharpening tools, your purchase comes with a silica base to hold the stone inside a non-slip silica gel base, make sure the diamond stone is fixed in the same place when sharpening. Place the knife on the diamond surface and keep an angle of about 30°. Move forward and backward several times, then change the other side of the knife and repeat the same process. This diamond sharpening stone uses diamond as abrasive material, which is more effective than normal sharpening stone and less likely to damage the edges. Double-sided diamond stone design with 400 grit for coarse sharpening and 1000 grit for fine sharpening. Oval hole design to collect and hold metal shavings. Suitable for sharpening family kitchen tools, such as cutlery, scissors, hunting pocket knives, blades, razors, hatchets, and axes. This diamond sharpening stone also works for carving knives, gardening tools, swords, and wood chisel sharpening. Size: Approx. 175 x 88 x 30 mm / 7.87 x 2.75 x 0.23 inches Grit Type: 400 Grit + 1000 Grit Weight: Approx. 354g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Package Included: 1 X 400/1000Grit Double Sided Diamond Sharpener Grinding Wheel