Together with Designer Sergio Mori, Napkin has created unique writing instruments. With the use of oxidation these writing instruments write like a pencil but last forever like a pen. Their unique writing instruments do not take a refill or ink like traditional pens or pencils instead they use an Ethergraf® tip made from an exclusive metal alloy. This tip is forged and then attached to the writing instrument and writes using oxidation when it contacts paper. This leaves a unique mark different from a pen or a pencil and the tip lasts forever.