1.1b high pencil lead 2.Dia of pencil leadls:2.425mm 3.long of pencil leads:185mm 4. ... international certification passed 1,Prouduct name:High-quality pencil leads;2,Hardness of pencil leads: 4H, 3H, 2H,H, ... ,7B,8B;3,Dia of pencil leadls:2.0mm,2.1mm,2.2mm,2.3mm,2.4mm,3.0mm,4.0mm,7.2mm ... /GROSS;800CTS/20GP;80000GROSS/20GP(Dia of pencil leadls:2.2mm);6,certification of pencil leads:Tested by EN71 ...