<br>WEIBO pencils feature a special break resistant lead that is glued the entire barrel length of the pencil - allowing for even sharpening and leads that will not fall out. This extends the life of your pencils in comparison to other graphite options. <br>WEIBO pencils are proudly created with 100% reforested wood that is grown through our Forest Stewardship Council certified forests, making these an environment friendly choice in art and writing materials.