These lead refills are for the STABILO EASYergo mechanical pencil, which is specially designed for children who are learning to write. Learning to write can be challenging, and the right tools can make the process easier - even enjoyable. Refill leads keep the pencil in use and the ideas flowing!Details:3.15 mm (HB)Six leadsExtra-thick lead is less likely to breakFor Stabilo EASYergo mechanical pencils (sold separetly)