BIC Break-Resistant mechanical pencils provide the perfect combination of innovative features and appealing design for a smooth, uninterrupted writing experience. No more broken leads. BIC Break-Resistant Mechanical Pencil has 75% stronger lead and an innovative shock-absoption mechanism that helps prevent lead breakage. vs leading competitor. Each BIC Break-Resistant mechanical pencil comes with specially formulated extra strong lead, as well as an easy to use twist-up jumbo-size eraser for clean corrections. Easily erase unwanted marks and make clean corrections with the jumbo, twist-up eraser that won't smudge the page.