Mitsubishi uni Jetstream 4+1 Multi-Function Pen JETSTREAM MSXE5-1000 Dedicated Cap Genuine This is a set of a dedicated cap and replacement eraser. * Erasers can be changed to Jetstream replacement ink. Please be sure to specify the color and thickness. Additional purchases and bundling are possible. Color: Black (Eraser only, cap only is also available, in which case it will be 300 yen) Regarding the eraser, it can be used with mechanical pencils from Mitsubishi Pencil other than Jetstream. Examples of compatible mechanical pencils are Kurutoga, Alpha Gel, and other mechanical pencils If you have any other color requests for the cap, please feel free to contact us. By changing the color of the cap, you can customize a two-tone Jetstream. Other colors are available from #Z Jetstream Cap If you can't find other colors in the listing, please contact us in the comments. We are looking forward to your comments.