Only wooden pencil connoisseurs know that all sharpened wooden pencils are not created equal. The length of the sharpened lead core can make a big difference in a \"make it or break it\" lead experience. This pencil sharpener, a 2004 winner of the Japan Good Design award, allows you to adjust the length of the sharpened lead core. Numbers are labeled on a dial, the larger the number the longer the sharpened lead core. Levels range from 1 to 5.