Professional knife sharpener 4 stages

Professional knife sharpener 4 stages adjustable sharpener Adjustment button suitable for various knives except serrated knives. Multi-Functional 3-Slot Knife Sharpening Slots: Manufactured from ultra-hard tungsten steel. Precision grinding slot, made of ceramic. Special slot for all types of scissors. Quality and durability Made of tungsten steel, ceramic and ABS plastic, which can withstand the pressure generated during the sharpening process, durable and can ensure a long service life. Instructions for use: 1. Please refer to the corresponding angle chart of the tool. Adjust the angle of the sharpener according to your knife. 2. Put the knife into the tooth groove vertically and pull it back 3-5 times. 3- Do not pull the knife back and forth, but pull it back from one side.