Double-sided sharpening: You will receive a whetstone with different sides, one 400# side for coarse grinding, one 1000# side for fine grinding. The unique honeycomb design ensures that the dust generated during the grinding process will not affect the sharpening. Effective material: This whetstone uses diamond as an abrasive, which is more effective than ordinary whetstones and has less chance of damaging the edge. Due to the high hardness of the material and low wear during use, our oilstone slabs can be used for a long time. Practical: This whetstone comes with a silicone base, which is non-slip and safe to use. The sharpening stone set is small in size and lightweight, easy to carry and store without taking up too much space. Easy to Use: Simply place the knife on the sharpening stone and move it back and forth several times at an angle of about 30. From housewives to professionals, everyone can use this diamond sharpening board. VARIOUS USES: The sharpening stone set is perfect for sharpening household and outdoor kitchen tools, wood chisels, jade, seals, or carving knives. This sharpening stone set is definitely a perfect gift for your family and friends.