The Sharp Mechanical Pencil is Pentel #1 selling Mechanical Pencil. Superior construction meets the rigorous demands of professionals and students alike. The 4mm tip length makes it ideal for use with rulers and templates. Each Sharp Mechanical Pencil is pre-loaded with Pentel super Hi-Polymer HB lead; never needs sharpening, is super strong and produces a clear dark line. Available in 0. 5mm, 0. 7mm and 0. 9mm lead sizes and backed by Pentel industry-leading limited lifetime .