I purchase these two items in bulk from Amazon. Disposable and inexpensive!!
They are absolutely wonderful for painting, staining, gluing, removing wet glue that has seeped out from a project and edge coating the side of leather.
The black brush has some type of angled rubber tip and when used for painting small items it delivers a beautiful and smooth finish.
Sometimes I take an alcohol marker and paint the tip of the angled brush. I have been able to paint very tiny things.