Staedtler Mars Lumograph Leads 4B pack of 12
STAEDTLER MARS LUMOGRAPH DRAWING LEADS - Graphite leads with superior qualities for use on paper. Lay down precise, black lines that will reproduce excellently and which are smearproof and smudgeproof, yet are easily erasable. 5-1/8" long leads in standard .078 (2 mm) to fit most lead holders.