Pica dry construction marker graphite for marking, marking and labelling even in hard-to-reach places. Writes on almost all materials, even on dusty, rough and oily surfaces. Can be wiped clean with a damp cloth on smooth surfaces. The leads are protected by a stainless steel tube and are pushed in using a pressure mechanism. The practical storage case also serves as a sharpener. Pen version with graphite lead B2 (all-purpose writer). Replacement leads for item no. 21 2151, water-soluble, pack of 10, graphite B2