2.2mm 3B graphite pencil lead hardness of lead:3B color of ... ;3,Dia of pencil leadls:2.0mm,2.1mm,2.2mm,2.3mm,2.4mm,3.0vmm,4.0mm,7 ... .2mm;4,Type of pencil leads: High-quality graphite pencil lead ; ... /GROSS;800CTS/20GP;80000GROSS/20GP(Dia of pencil leads:2.2mm);6,certification of pencil leads:Tested by EN71-3, ASTM ...