5 out of 50 were damaged. I think that it broke in the transport process. Since it is stupid to put complaints on it, we will not buy any glassware here.
I used a test tube as an exhibition presentation of wire art. Because I wanted to be like summer, a simple test tube was perfect. I liked it, I also bought a flat bottom with a thickness of 30 mm. Also, it is good that inside art can be seen well. While working, the bottom is flat, it is easy to work and is cheap. It is regrettable that you can not attach images.