Pentel® Super Hi-Polymer® Lead is the #1 selling brand in the USA! Never needs sharpening, is strong and resilient. 0.5mm lead produces fine lines. Fits any 0.5mm mechanical pencil. Each tube of Pentel Super Hi-Polymer HB lead is made of 100% recycled plastic and part of the Pentel Recycology line of products. Each tube contains 12 pieces. Sold as 12 tubes for a total of 144 pieces. This product ships in approximately 1 days