0.5ml grid size is 15X11X5mm
1ml grid size is 19X16X5mm
2ml grid size is 19X16X10mm
The watercolor is squeezed out from the original tube, the heating and drying process will produce bubbles and dry shrinkage, this is a normal phenomenon, does not affect the use.
Special attention: the watercolor will dry and shrink after drying, it will be sunken, not full