Fine leads for paper and drawing board. Easy refilling with "12 at once" for Mars micro, Graphite 760, Graphite 771, and Graphite 779. Provides a smoothly gliding lead for a bold line. Exceptionally elastic and particularly break-resistant. Good erasability. Marked with ISO color codes. Suitable for all mechanical pencils. Available in up to 7 degrees of hardness and 5 line widths: 0.3 mm, 0.5 mm, 0.7 mm, 0.9 mm, and 1.3 mm. The lead container can be easily attached, allowing the entire contents to be filled into the mechanical pencils Mars micro, Graphite 760, and Graphite 779 at once. Advantages include that the lead does not need to be handled, it does not fall out, and it does not break. The identical color coding for mechanical pencils, fine leads, and ink pens facilitates the visual identification of line widths. STAEDTLER acts ecologically and efficiently! Efficient and environmentally friendly – that’s the idea!.