“FOR ALL” graphite pencil 2B works on surfaces of almost all materials, whether they are dry or wet, smooth or rough, dusty or oily. can be wiped clean on smooth surfaces. for light or dark surfaces. integrated pencil sharpener in the holder. pressure mechanism for automatic feeding of the pencils in the stainless steel tube. pencil diameter 2.8 mm. made in Germany, in a box, All-inclusive warranty http://www.festool.se/service