Hi-polymer pencil lead pencil lead graphite pencil lead mechanical pencil ... pencil lead Adopt Japanese technology and equipments, supply high quality Hi-polymer pencil lead refill.Used for writing, drawing ,sketching.Strong ... .9mm,1.3mm and1.8mm-2B rectangle lead.Hardness:H,HB,B,2B,3B,4B,5B,6B and other specifications according ...