Size: 15×1.5x1cm. age: +3 years. Materials: plastic (abs/pp). pvc. stainless steel. isostatic pressure graphite. en71: yes. product information: the eternal pencils are made of isostatic pressure graphite. an extremely hard and durable graphite that the tip only deposits a small amount on the paper at a time. so it lasts a very long time. the pencil can be erased with an eraser. just like a normal pencil. but there is no need to sharpen it. click on the top to release the tip.