Mechanical pencil lead for use on paper and drawing card Easy “12-a-go” refilling for Mars® micro and graphite 779 Smooth gliding lead, jet black lines Suitable for use with all mechanical pencils Highly flexible – extremely break-resistant Easy to erase ISO colour coding 12 leads per tube Made from more than 90% natural raw materials Unique ecological manufacturing process without PVC or softening agents Product Code: 250 05-B