Bowbrush / Brush design for saving paints

Painter uses diversity kind of paints in tube for painting, when we use this tube, we squeeze it by our hands pushing it hard. We can’t squeeze it to the end, because it is hard to squeeze paint till last part of tube to use last drop.
We designed a new brush so that painter can squeeze all of paints in tube.
If painter pushes the paint tube through a hole of brush, painter will be able to squeeze all of them.
Don’t squeeze paint tube by your hand. It looks like bending a bow.

Our design can help painter to use last drop of paint saving it!