Artist brushes are used to apply a variety of paint to a whole range of surfaces. A brush consists of a handle and hairs, the handle itself usually comes in either short or long. Brush hairs vary greatly and can have a huge influence on the price. Each type of hair has properties which make the brush suitable for certain mediums like oil paint or watercolour. The way the hairs are structured on the brush also play a role in the application and technique of applying paint.