A "Column" series of ballpoint pens that shine vividly in a thin form. It is a simple round shaft with a high-class feeling, and even the main body, as well as small parts such as knocks that put out the core, are even made of wood. The feeling of warmth not found in plastic or metal seems to calm the feelings of roughness at work. There are many wooden stationery such as pen stands and trays, but writing instruments such as ballpoint pens and mechanical pencils are rare. Because the structure is complex and delicate. Mr. Yasuo Suzuki from the small workshop “Craft Rinkul” in Asahikawa shaped such a difficult product. Develop numerically controlled drilling machines (NC) that can be precisely machined to the nearest 0.01 mm based on woodworking experience and ironworking skills from a young age, and produce products that have been considered difficult until now Was done. Designs that can be enjoyed by students of all ages, regardless of age or gender, are perfect as gifts.