This set of 5 ox hair brushes is suitable for oil, acrylic and gouache paint. The set contains the following types and sizes: round brush in size 6, 2 cat tongue brushes in sizes 10 and 14, 2 flat brushes in sizes 10 and 14. Ox-ear hair is a strong and durable soft hair type that is suitable for all types of paint, particularly if you don't want to see a brush stroke or if you use the paint thinned. As ox-ear hair can absorb a great deal of thin paint, these brushes are also suitable for watercolour and gouache.