1.2.0 mm graphite pencil lead 2.pencil lead hardness:B 3.pencil lead color:black 4. ... ASTM-F963-08 1,Prouduct name:High-quality pencil leads;2,Hardness of pencil leads: 4H, 3H, 2H,H,HB,B ... ,6B,7B,8B;3,Dia of pencil leadls:2.0mm,2.1mm,2.2mm,2.3mm,2.4mm,3.0vmm,4.0mm,7.2mm;4 ... ;21KG/GROSS;800CTS/20GP;80000GROSS/20GP(Dia of pencil leads:2.2mm);6,certification of pencil leads:Tested by EN71-3 ...