Alvin 2mm Drafting Lead Package 12 Superior Drawing Lead
Alvin 2mm drafting lead packages of 12 for drawing is used to refill standard lead holders and clutch pencils. The lead hardness is determined by the clay to graphite ratio; harder drafting lead has a higher percentage of clay than softer sketching leads. The Alvin lead hardness ranges from 2B through 6H, medium soft to hard.
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