It may be a good place for handles to change their handles depending on the direction. Because there is personality by person. It is useful for polishing. However, as mentioned earlier, it is hard to pinch it when pinching cloth file etc, it is hard to tightly fit. In this case, it seems better to think that it is better to make one side completely come off. Also, the pasted sponge was worn out quickly. We need a little more robustness.
In actual use, there is an affordable area, it is much easier to use than using wood chips. However, since the appropriate length of the folded part when claming is short, it is necessary to cut it beforehand to a length slightly longer than the length of this product before pinching paper / cloth file. Rather, if you want to maintain this shape, it is better to shape it so that one side is all out. If it is a spring type that can not come off both sides, is not it easier to use it so that the folding file does not come to a dead end as much as possible? If you do that, you can also cut the extra after setting it in focus. The designer of the current shape can not help but thinks that it is actually a person who has never worked. Especially, when setting a rough file, it feels inconvenient. It is easy to come out when time is impossible to focus. I expect improvement.