2.2mm 3B graphite pencil lead hardness of lead:3B color of pencil lead:black certification:EN71-3, ASTM-F963-08,R.S.c. ... H-3 1,Prouduct name:3B graphite pencil lead;2,Hardness of pencil leads: 4H, 3H, 2H,H,HB,B,2B ... .0mm,7.2mm;4,Type of pencil leads: High-quality graphite pencil lead ;5,Normal packaging of pencil lead:L*W*H:36.5CM ...