The Kaweco 6-lead 3.2mm 5B box provides extra-soft, very dark graphite for artistic drawing and expressive, high-contrast writing. Composed of 6 thick 3.2mm diameter leads with a smooth 5B grade, it allows for rich lines, dense shadows, and fills with excellent pressure control. They are perfectly compatible with all Kaweco Sport and Sketch Up 3.2mm clutch pencils. The density of the 5B graphite is the essential tool for architects, urban sketchers, visual artists, and designers who create quick and expressive sketches.