・ Size: Shaft diameter 12.2mm x Thickness 17.1mm x Overall length 147.6mm ・ Ball diameter: 0.5mm / Mechanical pencil lead diameter: 0.5mm Weight: 15.3g ・ Specifications: Black and red ballpoint pen + mechanical pencil This multi-function pen is slim and lightweight, focusing on the frequently used black and red Jetstream ballpoint pens and a mechanical pencil. The optimal weight balance and slim design improve the grip, allowing you to better experience the smooth writing feel of the Jetstream.