I prepare it as a replacement part of stationery to use.
On 2018-03-17 13:54:58
There is nothing I'm so happy if we can replace the parts of the heart of a favorite pen.
It's a little troublesome, but it's amazing to be able to replace the pen tip with 0.3, 0.5, 0.7 and use it. However, usually I decided to use a pen tip for multiple colors by using multiple pens themselves, possessing them in preparation for that replacement spare. Very useful.