The KUM Butterfly makes it possible to create a round or pointed lead by simply inserting or removing the innovative Tipformer system. The Tipformer system also serves as a tool for cleaning the high-quality, high-carbon steel Dynamic Torsion Action blades. The KUM Butterly has been designed to ensure high ergonomics when working with it. The "Click" container opens by simply gently squeezing the outside of the KUM®Butterfly's body.