Question: what is the difference in graphite drawing pencils?
Answer: Grades of drawing pencils are organized in a scale based on softness or hardness. An "HB" pencil is found directly in the center of the scale. "H" pencils feature harder graphite. ... In other words, a "4H" pencil is harder than a "2H" pencil while a "4B" pencil is softer than a "2B" pencil.