Art Supplies Pencil Lead for Sketching 1)size:3.13mm; 2)hardness: ... : EN71,ASTM-F963 Product Art Supplies Pencil Lead for Sketching Material GraphiteGrade Standard QualityColor BlackHardness 6BShape RoundDiameter 3 ... -F963-081,Prouduct name:High-quality pencil leads;2,Hardness of pencil leads: 4H, 3H, 2H,H,HB,B ... 0mm,4.0mm,7.2mm;4,Type of pencil leads: High-quality graphite pencil lead ;5,Normal packaging ...