Mechanical pencil lead for use on paper and drawing card Innovative push-button mechanism for single-handed use and refilling of individual leads Funnel-shaped tip for easy refilling Lead content window Smooth-gliding lead Jet-black lines Easy to erase Highly flexible - extremely break-resistant Suitable for use with all mechanical pencils 2 line widths (0.5 mm/0.7 mm) 2 degrees 40 leads per tube