Used when making resin and herbarium accessories.
This price is too good for this quantity.
But is it hard to close the stopper?
The size of the stopper is larger than that of the test tube, and it feels like screwing in rather than coming in smoothly.
It is more difficult to close when it receives air resistance.
Usually, it is difficult to get in from the middle of the plug and push it in and close it with a feeling of "kachin", but this has a hard time from the beginning part of putting it.
I'll try a few things a couple of times as there may be some tips.
However, I think that it is safe to make sure that liquid doesn't leak absolutely because it closes tightly for that amount.