The #1 selling lead in the world and the industry standard. Smoother and stronger than the competition. Proprietary lead Formula resists breaking. Dark imprint is ideal for drawing,while light imprint is ideal for drafting and template work. Hb lead is equivalent to a #2 Pencil and is to accurately scan on tests and documents. #1 selling lead in the world Pentel Super Hi-Polymer HB lead is equivalent to a #2 Pencil,to scan on tests,resists breaking and never needs sharpening Each tube of Pentel Super Hi-Polymer HB lead is made of 100% recycled plastic and part of the Pentel Recycology line of products Never needs sharpening and produces a clear,dark line Ideal for all general writing applications such as notes,letters,etc..