3 Sharpening LevelsThe knife sharpener is designed with tungsten carbide blades, carbide and ceramic for 3 sharpening levels. The fine grinding grooves are intended for daily or weekly dressing of the cutting edge. The coarse grinding groove is for damaged or dull edges. The exquisite grinding groove is used for polishing and deburring to achieve true sharpness effect. Ergonomic Design Secure and ergonomic handle maximizes comfort and provides you with grip easy and gentle 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 3-5 times for sharpening fast and effective. Note: Please do not slide back and forth. Suitable for most knivesThe multi-purpose sharpener is ideal for most kitchen knives, hunting knives, pocket knives and knives standard fishing gear. Note: Not suitable for scissors or serrated knives. Excellent qualityOur professional manual knife sharpeners are made of ABS plastic, strong, durable and will last a lifetime.