Set of 30 Metal Mechanical Pencils: Includes 6 silver metal mechanical drafting pencils with 0.5mm, 0.7mm, 0.9mm and 2.0mm graphite pencils for sketching and drawing. Variety of Graphite and Color ...

Yet without precise engineering and build quality, the standard slender leads are doomed to constant breakages. This round-up of high-end mechanical pencils has an emphasis ... Using 0.7mm leads for a ...