Double-sided Sharpening: design ensures that the dust generated during the grinding process will not affect the sharpening. Efficient Material: This knife sharpening stone uses diamond as abrasive material which is more efficient than normal whetstone and less risk of damaging the edges. Due to the high hardness of the material and the low loss during use, whetstone plate can be used for a long time. Convenient: This sharpener stone comes with silica base, non-slip and safe to use. The whetstone kits are small in size and light in weight, so they are easy to carry and without taking up too much space. Easy to Use: You just need to place on the sharpening stone and move it back and forth while maintaining an of about 30. This Diamond Sharpening Plate can be used by everyone from stay at home to various . Various Applications: The sharpener stone set is very suitable for grinding kitchen and outdoor tools, woodworking chisel, jade, seals, or carving knives. This sharpening stone kit definitely a PERFECT GIFT & . color:Silver Material:diamond size:About 155mm Package Contents: 1 x Double-sided Sharpening(400/1000 ) Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.