【3 Sharpening Levels】 The knife sharpener is designed with tungsten carbide, carbide, and ceramic blades for 3 sharpening levels. The fine grinding grooves are for daily or weekly sharpening of the edge. The coarse grinding groove is for damaged or dull edges. The exquisite grinding groove is used for polishing and deburring to achieve a true sharpening effect. 【Ergonomic Design】 The secure and ergonomic handle maximizes comfort and provides you with an easy and smooth grip when sharpening your knife. Designed with a preset optimal sharpening angle, the knife sharpener is suitable for left- or right-handed users. The rubber foot is non-slip and ensures that it stays in place with every movement. 【Easy to Use】 Simply insert the blade into each of the slots and gently pull the knife 3 to 5 times for fast and effective sharpening. Note: Please do not slide back and forth. 【Suitable for Most Knives】The versatile sharpener is ideal for most standard kitchen knives, hunting knives, pocket