The high-quality tungsten steel treated by high temperature ensures efficient and sharp sharpening effect. The considerate design of the suction cup is non-slip and not easy to cut. The blunt knife becomes sharp immediately after 2-3 times. The quality and quantity are guaranteed. The plastic parts are non-toxic and tasteless. When using it, find a clean flat surface to suck the suction cup and place it on the desktop. Do not have air in the suction cup, and then press the handle firmly. You can easily have a sharp knife with a few strokes back and forth. Note that there must be no air in the suction cup. Otherwise, the air will enter, and it will be easy to cut people if it is not strong. Pay attention to protect the tungsten steel during use to prevent falling from high altitude. It is made of tungsten steel and PVC, durable and easy to use. It has a base diameter of 6 cm, a height of 6.3 cm, and a width of 6 cm. It is used to sharpen knives. Item Name: Knife Sharpener Material:PVC,Tungsten Style: Modern Type: Standard Size:6.3cmx6cmx6cm/2.48inx2.36inx2.36in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. There must be no air in the suction cup, otherwise, it will be easy to be cut if it is unstable. Pay attention to protect the tungsten steel from falling during use. Package Includes: 3 x 1 X Knife Sharpener