Pica Replacement lead set BIG-Dry FOR ALL graphite

Rectangular leads with 2 x 5 mm in cross-section, 150 mm long, 12 leads each in a case, universal? For almost all materials, whether dry or wet, smooth or rough, dusty or oily, light or dark, can be wiped off smooth surfaces with a damp cloth, does not show through when painted over with emulsion paint, protect red and white from temperatures> 30 ° C