2.2mm 3B graphite pencil lead hardness of lead:3B color of ... .c.H-3 1,Prouduct name:3B graphite pencil lead;2,Hardness of pencil leads: 4H, 3H, 2H,H,HB,B ... ,8B;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 ... ;21KG/GROSS;800CTS/20GP;80000GROSS/20GP(Dia of pencil leads:2.2mm);6,certification of pencil leads:Tested by EN71-3, ASTM ...