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What does the 4B refer to?- Asked by Mike D on 19-Apr-14
The label refers to how the leads range from hard to soft: 4H, 2H, H, HB, B, 2B, 4B. 4B is the softest of this group; therefore, it creates a darker, blacker line easily. 4H is the hardest lead and creates a light line that can be easily erased completely.- Answered by MisterArt on 21-Apr-14
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