This is a bolt-action ballpoint pen made of titanium, supervised by Hidetoshi Nakayama. Made of titanium alloy and heat-treated, the grip section is brown and the upper part has a bluish tint. The inner parts, which are visible with the bolt action, are made of brass and have a unique aging effect. It's a full-metal, sturdy construction, and because it's made of titanium, it's not too heavy, making it a fine item that you can use for a long time. I purchased it about 3 years ago for approximately 37,000 yen. Length: Approximately 135mm Weight: Approximately 40g *Please note that there may be slight variations. Please purchase only if you understand that this is a used item.