Tech Eternal Pencil

Product information: Material: Plastic + copper + graphite Case material: plastic Features: Environmental protection, write constantly, no cutting, eternal Lead color: gold green, orange, gold powder, pink blue, gold blue, pen tip Lead core hardness :HB Features: 1. The product writing 1 meter comprehensive wear about 0.005mm loss about 0.0062 cubic mm, can write the volume of 99.011 cubic mm, theoretical writing about 15900 meters 2. Wooden pencil 1 meter wear 1.8mm (International GB/T26704-2011) Theoretical writing 100 meters. The theoretical writing length of this product is 159 times that of a wooden pencil." "Eternity," as opposed to a wooden pencil, is not forever. Packing list: Pencil*1pc