#1 selling lead in the world. Refill lead for 0.7mm or 0.9mm Mechanical pencils Pentel Super Hi-Polymer HB lead is equivalent to a #2 Pencil, guaranteed 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. Each 60mm piece of lead is equivalent to a wood case pencil.