Per Traveler's "The ballpoint pen does not require an eraser, so we added a ring so that one can customize the pen with a string or a hook. By doing so, you can carry this around like a key holder and hang it on your backpack or belt. Since people use pen frequently, the rate in which the color and texture of the brass changes is faster, so you can tell the change it goes through quickly. This will give the pen a feeling of an old tool that a craftsman has been using for a long time."

This is a pen made in a press factory located in one of the historical districts of Tokyo. This product consists of two parts, the brass made holder  and the actual pen. When this is not used, the pen fits inside the holder, achieving a high level of portability.