The product is a set of 12 Staedtler Mars Lumograph HB pencil leads, designed for mechanical pencils. The leads are of black HB hardness, known for providing a smooth and precise writing experience. This vintage Mars Dynagraph pencil lead set is ideal for artists, designers, and writers who value quality and reliability in their writing tools. With Staedtler's reputation for high-quality products, these leads are sure to meet the demands of any professional or creative individual.
eBay