The perfect 4 in 1 design: Unlike the 3 in one knife sharpener on the market, our knife sharpener has four incisions that meet your different needs. The new 4-step design is divided into scissor-specific slot sharpening and coarse slot precision sharpening to meet your various requirements. Non-slip rubber base + ergonomic handle: The bottom of the knife sharpener has non-slip rubber bases that prevent slipping during use, so you no longer have to worry about it shaking. At the same time, you can easily grip and use the knife sharpener with the ergonomic handle. High quality materials: The handle is made of ABS plastic, resistant to heat, high temperature and impact, the outer side of the sharpening slot is made of 430 stainless steel and the inner side of the respective sharpening slot is made of tungsten steel, a diamond sharpening rod and a ceramic sharpening rod. The quality is exceptional. Very practical: with which you can sharpen almost all steel knives and scissors (except very wavy blades like bread knives, serrated knives), simply insert the dull knife into sharpen the slot and remove it a few times until the knife is sharp enough. Tips: To benefit from this sharpener, it is recommended to sharpen the knife in one direction only. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual item received shall prevail.