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. 0.5mm lead produces crisp, fine lines of consistent density. Ideal for all general writing applications such as notes, letters, etc. Fits all 0.5mm mechanical pencils