Alvin 2mm Drafting Lead Package of 3 Superior Strength Leads for Drawing
Alvin 2mm drafting lead packages of 3 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.
You May Also Like: