Features: Professional Rolling Knife Sharpener: Just push the roller gently, everyone can sharpen the knife as quickly as the experts. Achieve sharpness without the mess, or need for electricity/water. High-Grade Materials: The roller and magnetic base are made of high-grade natural wood, the roller is equipped with diamond discs(400# & 1000#). Grinding with the diamond 400# disc and polishing with the diamond 1000# disc, you will always have a very sharp knife. Multi-functional Magnetic Angle Base: The knife with 2 angles supports: 20 degrees is suitable for most home kitchens, and 15 degrees is suitable for higher sharpness requirements or ultra-fine cutting to meet your different needs(Excluding serrated and scissors). Widely Used: Simply select the angle and use a magnetic tool holder to secure the blade. Then roll the knife back and forth until the blade is sharp. Finally, use a smoother disc on the other end to polish the edges. Gift Box Packaging & Quality Service: We have equipped the knife sharpener with a high-end packaging box. Not only for chefs, families, and outdoor enthusiasts but also the perfect gift for your friends and family. Specifications: Material: diamonds Size: 9*5.5cm，10.5*6.3*2.5cm Package Included: 1 x Rolling Knife Sharpener 1 x Quadrate Knife Sharpener 1 x User manual