Experience the superior quality of the world's #1 selling lead, the Pentel Super Hi-Polymer HB lead. This refill lead is perfect for 0.5mm mechanical pencils, providing a smooth and consistent writing experience. Equivalent to a #2 pencil, it's guaranteed to scan on tests, making it an ideal choice for students and professionals alike. One of its standout features is its durability - it resists breaking and never needs sharpening, ensuring long-lasting use. As part of Pentel's commitment to sustainability, each tube of this top-selling lead is made from 100% recycled plastic and is a proud member of the Pentel Recycology line of products.