Feinmine for paper and drawing board. Simple refilling with "12 at a stroke" for Mars micro, graphite 760, graphite 771 and graphite 779. With a smoothly gliding lead for a rich stroke. Exceptionally elastic and particularly break-resistant. Good erasability. With ISO color code marking. 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 refill is simply snapped on, and the entire content can be filled into the mechanical pencil Mars micro, graphite 760 and graphite 779 at once. Advantages: No touching of the lead, the lead does not fall off, the lead does not break. The identical color coding on mechanical pencils, fine leads and ink pencils facilitates the visual assignment of line widths. STAEDTLER acts both ecologically and efficiently! Efficient and environmentally friendly – that’s the idea!.