Fine leads for paper and drawing paper. Simple refill with "12 at a time" for Mars micro, Graphit 760, Graphit 771, and Graphit 779. Provides a smoothly gliding lead for a bold stroke. Exceptionally elastic and particularly break-resistant. Good erasability. Equipped with ISO color markings. Suitable for all mechanical pencils. Available in up to 7 hardness grades 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 so that the entire content can be filled into the mechanical pencils Mars micro, Graphit 760, and Graphit 779 at once. Advantages include that the lead does not have 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!.