"4-in-1 Versatility" The first diamond grinding rod repairs damaged blades and straightens them before grinding, restoring the V-shape with the second slot. Finally, the third slot fine-tunes for a clean polish, and the fourth slot is a scissor sharpener. Each slot specializes in polishing different blades, improving safety and performance. "Reliable Blade Sharpener" Featuring a non-slip rubber base, our professional knife sharpener stays firmly in place during use. This portable knife sharpener tool allows for reliable use for many years and is safe for both left and right hands. Amazing sharpness restored in just 5 seconds! Easy and convenient 4-stage portable sharpener. [Sharpness Revived in 3 Steps] Simply insert the knife into the sharpening section and pull it towards you. You can easily sharpen your knives. The sharpening section has three types: diamond, tungsten, and ceramic. Use them properly, and the sharpness of your dull knives will be restored. [Leave All Your Kitchen Knives to Us] Compatible with knives such as sashimi knives, Chinese chef's knives, vegetable knives, santoku knives, and fruit knives. Cooking scissors have a dedicated sharpening section, so you can sharpen them easily. * Ceramic and serrated blades cannot be used. [Safety Design] Easy-to-grip handle and non-slip processing on the bottom prevent slippage. You can use it with peace of mind because it doesn't require force. Size: 3.9 x 20.5 x 9.7cm Weight: 165g *Instruction manual is not included"