It undergoes immediately just jiggle, it is knife sharpener in the shape of a cute fish. I am knife sharpener that undergoes easily and quickly by light power. Silhouette of pretty fish, you can happily work pita [Features] refrigerator! It is convenient without taking storage space from stick with a magnet. You can use quickly when I want to use. [How to use it on a flat surface such as above (1) table, a kitchen knife upright, you put a blade in the gap of the ceramic ball. While pressing lightly from the top (2) kitchen knife, you pull it straight. I sharpened ends in 10 times (3) from 6 times. Simple