This Kutsuwa K'Zool adjustable pencil sharpener allows you to adjust the length of the sharpened pencil lead (with five grades) - very useful for use with different types of pencils. For example, using the K'Zool with pencils with soft cores such as coloured pencils, you can create a shorter point which is less likely to break. You end up with a 'blunter' point, but the trade off is that you prolong the life of your softer core pencils. For a harder core such as HB lead, you can create a longer point. If you prefer a perfectly sharp (but shorter) core, we recommend you try the Kutsuwa T'Gaal sharpener.