Box of 6 thick lead colour pencils Copper Ref: 0713206 EAN: 8411574082057 Colour pencils with thick leads measuring 3.5 mm , Copper edition. Black lime wood, hexagonal shape. The lead creates a uniform stroke and is resistant to breakage due to its LPS (Lead Protection System) which strengthens the lead by sticking it to thewood. The wood is sourced from sustainable forests. 6 colours: copper, white, black, green, pink and violet.