These cute pencil caps protect the tips of your pencils from breaking and the rest of your things from getting marked or poked. They are made of colorful, break-resistant plastic with a soft rubber rim that grips the pencils without damaging their paint. Anti-slip grooves inside the rubber rim keep the caps secure on the pencils. The caps' curved shape strengthens them against cracks and keeps the pencils from going too far into the caps and hitting the ends. These caps fit most standard round, hexagonal, and triangular pencils.