Professional Rolling Knife Sharpener - With this knife sharpener, not only can you enjoy professional-level sharpening results, but it also greatly simplifies your knife sharpening process and save your time. You only need to place the blade on the side of the magnetic sharpener stone marked with degrees, and then pick up the roller to roll it to make the blade sharp again.<br>Unique Four Angle Design - Unlike other traditional knife sharpeners, rolling knife sharpeners 4 angles to meet different needs. The 15° and 18° angles ensure precise sharpness for tasks like sushi preparation and high-carbon steel knives. The 20° and 22° angles create strong edges for tough kitchen cutting tasks and more.<br>Nature Wood & Strong Magnets - This rolling knife sharpener kit is made of High-grade natural wood. The magnetic support keeps your knives rock-solid while sharpening, outclassing other roller knife sharpeners in stability and accuracy.