This is a wooden shaft pen, a gear shift ballpoint pen, from Koubou AKIRA. It features a gimmick where you shift gears to extend the ballpoint pen refill! The mulberry wood from Miyake Island is an endangered species and is rare. It has only been used to check its operation since purchase. #Nohara Kougei #Koubou Setsuri #Craft A #Kobuta Koubou #Flamberg #Kinmokusei #Bonan Pen