Box of 12 ferby triangular graphite pencils 12 cm box of 12 ferby triangular graphite pencils 12 cm 30 different colours grade 3b natural wood ferbys triangular shape was designed with the help of physiologists and pedagogues its new shape ensures that users avoid hand tiredness its end is sealed with solid wood length 12 cm with an economic lead diameter of 6 25 mm see more product details