Our robust and easy to use brass products are made in Japan by experienced craftspeople. Through its use, the surface starts to oxidize, and this deepens the color and adds taste to the material. Besides, there may be slight scratches as the surface is not plated to enjoy the texture of brass and change as it ages. By a long time use the change in color lessen the concern. And this ink rollerball pen has a clip with the distinctive texture of iron, to match with aged brass color. It may look like stain or uneven surface. By a long time use the change in color lessen the concern, too. The top of the ink rollerball pen has a ring for attaching a hook or string, so you can clip it to your bag as a key holder or customize it using beads and other items - let your imagination run free! The ring can also be removed for a clip-free ink rollerball pen if you prefer. This is an ink rollerball pen that can be stored compactly. Uses international standard cartridges.