This Double face daimond sharpener design as 360Grit for coarse sharpening and 600Grit for fine honing. Clear plastic cover protects the stone, molded plastic base with non-slip feet for safety.Features - Color: As shown.- Material: Diamond.- Size: 18 x 8.9 x 3.6cm (LxWxH).- Excellent sharpening performance.- Double sided diamond design as 360Grit for coarse sharpening and 600Grit for fine honing.- Clear plastic cover protects the stone, molded plastic base with non-slip feet for safety.- Oval hole design to collect and hold metal chippings.Cautions: 1. Do not use the sharpener to sharpen serrated blades. 2. It would be much better to use with sharpening oil or water 3. The diamond may discolor. This is normal. 4. Please dont put sharpener in dishwasher or Water 5. Please put the sharpener and keep away the children, avoid accidents Packing list1 x Double Sided Diamond Sharpening Stone Kitchen Outdoor Sharpener